1 /*******************************************************************************
3 Intel(R) Gigabit Ethernet Linux driver
4 Copyright(c) 2007 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *******************************************************************************/
28 #include <linux/module.h>
29 #include <linux/types.h>
30 #include <linux/init.h>
31 #include <linux/vmalloc.h>
32 #include <linux/pagemap.h>
33 #include <linux/netdevice.h>
34 #include <linux/ipv6.h>
35 #include <net/checksum.h>
36 #include <net/ip6_checksum.h>
37 #include <linux/mii.h>
38 #include <linux/ethtool.h>
39 #include <linux/if_vlan.h>
40 #include <linux/pci.h>
41 #include <linux/delay.h>
42 #include <linux/interrupt.h>
43 #include <linux/if_ether.h>
45 #include <linux/dca.h>
49 #define DRV_VERSION "1.2.45-k2"
50 char igb_driver_name[] = "igb";
51 char igb_driver_version[] = DRV_VERSION;
52 static const char igb_driver_string[] =
53 "Intel(R) Gigabit Ethernet Network Driver";
54 static const char igb_copyright[] = "Copyright (c) 2008 Intel Corporation.";
56 static const struct e1000_info *igb_info_tbl[] = {
57 [board_82575] = &e1000_82575_info,
60 static struct pci_device_id igb_pci_tbl[] = {
61 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576), board_82575 },
62 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_FIBER), board_82575 },
63 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES), board_82575 },
64 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER), board_82575 },
65 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER), board_82575 },
66 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES), board_82575 },
67 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER), board_82575 },
68 /* required last entry */
72 MODULE_DEVICE_TABLE(pci, igb_pci_tbl);
74 void igb_reset(struct igb_adapter *);
75 static int igb_setup_all_tx_resources(struct igb_adapter *);
76 static int igb_setup_all_rx_resources(struct igb_adapter *);
77 static void igb_free_all_tx_resources(struct igb_adapter *);
78 static void igb_free_all_rx_resources(struct igb_adapter *);
79 static void igb_free_tx_resources(struct igb_ring *);
80 static void igb_free_rx_resources(struct igb_ring *);
81 void igb_update_stats(struct igb_adapter *);
82 static int igb_probe(struct pci_dev *, const struct pci_device_id *);
83 static void __devexit igb_remove(struct pci_dev *pdev);
84 static int igb_sw_init(struct igb_adapter *);
85 static int igb_open(struct net_device *);
86 static int igb_close(struct net_device *);
87 static void igb_configure_tx(struct igb_adapter *);
88 static void igb_configure_rx(struct igb_adapter *);
89 static void igb_setup_rctl(struct igb_adapter *);
90 static void igb_clean_all_tx_rings(struct igb_adapter *);
91 static void igb_clean_all_rx_rings(struct igb_adapter *);
92 static void igb_clean_tx_ring(struct igb_ring *);
93 static void igb_clean_rx_ring(struct igb_ring *);
94 static void igb_set_multi(struct net_device *);
95 static void igb_update_phy_info(unsigned long);
96 static void igb_watchdog(unsigned long);
97 static void igb_watchdog_task(struct work_struct *);
98 static int igb_xmit_frame_ring_adv(struct sk_buff *, struct net_device *,
100 static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *);
101 static struct net_device_stats *igb_get_stats(struct net_device *);
102 static int igb_change_mtu(struct net_device *, int);
103 static int igb_set_mac(struct net_device *, void *);
104 static irqreturn_t igb_intr(int irq, void *);
105 static irqreturn_t igb_intr_msi(int irq, void *);
106 static irqreturn_t igb_msix_other(int irq, void *);
107 static irqreturn_t igb_msix_rx(int irq, void *);
108 static irqreturn_t igb_msix_tx(int irq, void *);
109 static int igb_clean_rx_ring_msix(struct napi_struct *, int);
111 static void igb_update_rx_dca(struct igb_ring *);
112 static void igb_update_tx_dca(struct igb_ring *);
113 static void igb_setup_dca(struct igb_adapter *);
114 #endif /* CONFIG_DCA */
115 static bool igb_clean_tx_irq(struct igb_ring *);
116 static int igb_poll(struct napi_struct *, int);
117 static bool igb_clean_rx_irq_adv(struct igb_ring *, int *, int);
118 static void igb_alloc_rx_buffers_adv(struct igb_ring *, int);
119 #ifdef CONFIG_IGB_LRO
120 static int igb_get_skb_hdr(struct sk_buff *skb, void **, void **, u64 *, void *);
122 static int igb_ioctl(struct net_device *, struct ifreq *, int cmd);
123 static void igb_tx_timeout(struct net_device *);
124 static void igb_reset_task(struct work_struct *);
125 static void igb_vlan_rx_register(struct net_device *, struct vlan_group *);
126 static void igb_vlan_rx_add_vid(struct net_device *, u16);
127 static void igb_vlan_rx_kill_vid(struct net_device *, u16);
128 static void igb_restore_vlan(struct igb_adapter *);
130 static int igb_suspend(struct pci_dev *, pm_message_t);
132 static int igb_resume(struct pci_dev *);
134 static void igb_shutdown(struct pci_dev *);
136 static int igb_notify_dca(struct notifier_block *, unsigned long, void *);
137 static struct notifier_block dca_notifier = {
138 .notifier_call = igb_notify_dca,
144 #ifdef CONFIG_NET_POLL_CONTROLLER
145 /* for netdump / net console */
146 static void igb_netpoll(struct net_device *);
149 static pci_ers_result_t igb_io_error_detected(struct pci_dev *,
150 pci_channel_state_t);
151 static pci_ers_result_t igb_io_slot_reset(struct pci_dev *);
152 static void igb_io_resume(struct pci_dev *);
154 static struct pci_error_handlers igb_err_handler = {
155 .error_detected = igb_io_error_detected,
156 .slot_reset = igb_io_slot_reset,
157 .resume = igb_io_resume,
161 static struct pci_driver igb_driver = {
162 .name = igb_driver_name,
163 .id_table = igb_pci_tbl,
165 .remove = __devexit_p(igb_remove),
167 /* Power Managment Hooks */
168 .suspend = igb_suspend,
169 .resume = igb_resume,
171 .shutdown = igb_shutdown,
172 .err_handler = &igb_err_handler
175 static int global_quad_port_a; /* global quad port a indication */
177 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
178 MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver");
179 MODULE_LICENSE("GPL");
180 MODULE_VERSION(DRV_VERSION);
184 * igb_get_hw_dev_name - return device name string
185 * used by hardware layer to print debugging information
187 char *igb_get_hw_dev_name(struct e1000_hw *hw)
189 struct igb_adapter *adapter = hw->back;
190 return adapter->netdev->name;
195 * igb_init_module - Driver Registration Routine
197 * igb_init_module is the first routine called when the driver is
198 * loaded. All it does is register with the PCI subsystem.
200 static int __init igb_init_module(void)
203 printk(KERN_INFO "%s - version %s\n",
204 igb_driver_string, igb_driver_version);
206 printk(KERN_INFO "%s\n", igb_copyright);
208 global_quad_port_a = 0;
210 ret = pci_register_driver(&igb_driver);
212 dca_register_notify(&dca_notifier);
217 module_init(igb_init_module);
220 * igb_exit_module - Driver Exit Cleanup Routine
222 * igb_exit_module is called just before the driver is removed
225 static void __exit igb_exit_module(void)
228 dca_unregister_notify(&dca_notifier);
230 pci_unregister_driver(&igb_driver);
233 module_exit(igb_exit_module);
236 * igb_alloc_queues - Allocate memory for all rings
237 * @adapter: board private structure to initialize
239 * We allocate one ring per queue at run-time since we don't know the
240 * number of queues at compile-time.
242 static int igb_alloc_queues(struct igb_adapter *adapter)
246 adapter->tx_ring = kcalloc(adapter->num_tx_queues,
247 sizeof(struct igb_ring), GFP_KERNEL);
248 if (!adapter->tx_ring)
251 adapter->rx_ring = kcalloc(adapter->num_rx_queues,
252 sizeof(struct igb_ring), GFP_KERNEL);
253 if (!adapter->rx_ring) {
254 kfree(adapter->tx_ring);
258 adapter->rx_ring->buddy = adapter->tx_ring;
260 for (i = 0; i < adapter->num_tx_queues; i++) {
261 struct igb_ring *ring = &(adapter->tx_ring[i]);
262 ring->adapter = adapter;
263 ring->queue_index = i;
265 for (i = 0; i < adapter->num_rx_queues; i++) {
266 struct igb_ring *ring = &(adapter->rx_ring[i]);
267 ring->adapter = adapter;
268 ring->queue_index = i;
269 ring->itr_register = E1000_ITR;
271 /* set a default napi handler for each rx_ring */
272 netif_napi_add(adapter->netdev, &ring->napi, igb_poll, 64);
277 static void igb_free_queues(struct igb_adapter *adapter)
281 for (i = 0; i < adapter->num_rx_queues; i++)
282 netif_napi_del(&adapter->rx_ring[i].napi);
284 kfree(adapter->tx_ring);
285 kfree(adapter->rx_ring);
288 #define IGB_N0_QUEUE -1
289 static void igb_assign_vector(struct igb_adapter *adapter, int rx_queue,
290 int tx_queue, int msix_vector)
293 struct e1000_hw *hw = &adapter->hw;
296 switch (hw->mac.type) {
298 /* The 82575 assigns vectors using a bitmask, which matches the
299 bitmask for the EICR/EIMS/EIMC registers. To assign one
300 or more queues to a vector, we write the appropriate bits
301 into the MSIXBM register for that vector. */
302 if (rx_queue > IGB_N0_QUEUE) {
303 msixbm = E1000_EICR_RX_QUEUE0 << rx_queue;
304 adapter->rx_ring[rx_queue].eims_value = msixbm;
306 if (tx_queue > IGB_N0_QUEUE) {
307 msixbm |= E1000_EICR_TX_QUEUE0 << tx_queue;
308 adapter->tx_ring[tx_queue].eims_value =
309 E1000_EICR_TX_QUEUE0 << tx_queue;
311 array_wr32(E1000_MSIXBM(0), msix_vector, msixbm);
314 /* Kawela uses a table-based method for assigning vectors.
315 Each queue has a single entry in the table to which we write
316 a vector number along with a "valid" bit. Sadly, the layout
317 of the table is somewhat counterintuitive. */
318 if (rx_queue > IGB_N0_QUEUE) {
319 index = (rx_queue & 0x7);
320 ivar = array_rd32(E1000_IVAR0, index);
322 /* vector goes into low byte of register */
323 ivar = ivar & 0xFFFFFF00;
324 ivar |= msix_vector | E1000_IVAR_VALID;
326 /* vector goes into third byte of register */
327 ivar = ivar & 0xFF00FFFF;
328 ivar |= (msix_vector | E1000_IVAR_VALID) << 16;
330 adapter->rx_ring[rx_queue].eims_value= 1 << msix_vector;
331 array_wr32(E1000_IVAR0, index, ivar);
333 if (tx_queue > IGB_N0_QUEUE) {
334 index = (tx_queue & 0x7);
335 ivar = array_rd32(E1000_IVAR0, index);
337 /* vector goes into second byte of register */
338 ivar = ivar & 0xFFFF00FF;
339 ivar |= (msix_vector | E1000_IVAR_VALID) << 8;
341 /* vector goes into high byte of register */
342 ivar = ivar & 0x00FFFFFF;
343 ivar |= (msix_vector | E1000_IVAR_VALID) << 24;
345 adapter->tx_ring[tx_queue].eims_value= 1 << msix_vector;
346 array_wr32(E1000_IVAR0, index, ivar);
356 * igb_configure_msix - Configure MSI-X hardware
358 * igb_configure_msix sets up the hardware to properly
359 * generate MSI-X interrupts.
361 static void igb_configure_msix(struct igb_adapter *adapter)
365 struct e1000_hw *hw = &adapter->hw;
367 adapter->eims_enable_mask = 0;
368 if (hw->mac.type == e1000_82576)
369 /* Turn on MSI-X capability first, or our settings
370 * won't stick. And it will take days to debug. */
371 wr32(E1000_GPIE, E1000_GPIE_MSIX_MODE |
372 E1000_GPIE_PBA | E1000_GPIE_EIAME |
375 for (i = 0; i < adapter->num_tx_queues; i++) {
376 struct igb_ring *tx_ring = &adapter->tx_ring[i];
377 igb_assign_vector(adapter, IGB_N0_QUEUE, i, vector++);
378 adapter->eims_enable_mask |= tx_ring->eims_value;
379 if (tx_ring->itr_val)
380 writel(tx_ring->itr_val,
381 hw->hw_addr + tx_ring->itr_register);
383 writel(1, hw->hw_addr + tx_ring->itr_register);
386 for (i = 0; i < adapter->num_rx_queues; i++) {
387 struct igb_ring *rx_ring = &adapter->rx_ring[i];
389 igb_assign_vector(adapter, i, IGB_N0_QUEUE, vector++);
390 adapter->eims_enable_mask |= rx_ring->eims_value;
391 if (rx_ring->itr_val)
392 writel(rx_ring->itr_val,
393 hw->hw_addr + rx_ring->itr_register);
395 writel(1, hw->hw_addr + rx_ring->itr_register);
399 /* set vector for other causes, i.e. link changes */
400 switch (hw->mac.type) {
402 array_wr32(E1000_MSIXBM(0), vector++,
405 tmp = rd32(E1000_CTRL_EXT);
406 /* enable MSI-X PBA support*/
407 tmp |= E1000_CTRL_EXT_PBA_CLR;
409 /* Auto-Mask interrupts upon ICR read. */
410 tmp |= E1000_CTRL_EXT_EIAME;
411 tmp |= E1000_CTRL_EXT_IRCA;
413 wr32(E1000_CTRL_EXT, tmp);
414 adapter->eims_enable_mask |= E1000_EIMS_OTHER;
415 adapter->eims_other = E1000_EIMS_OTHER;
420 tmp = (vector++ | E1000_IVAR_VALID) << 8;
421 wr32(E1000_IVAR_MISC, tmp);
423 adapter->eims_enable_mask = (1 << (vector)) - 1;
424 adapter->eims_other = 1 << (vector - 1);
427 /* do nothing, since nothing else supports MSI-X */
429 } /* switch (hw->mac.type) */
434 * igb_request_msix - Initialize MSI-X interrupts
436 * igb_request_msix allocates MSI-X vectors and requests interrupts from the
439 static int igb_request_msix(struct igb_adapter *adapter)
441 struct net_device *netdev = adapter->netdev;
442 int i, err = 0, vector = 0;
446 for (i = 0; i < adapter->num_tx_queues; i++) {
447 struct igb_ring *ring = &(adapter->tx_ring[i]);
448 sprintf(ring->name, "%s-tx%d", netdev->name, i);
449 err = request_irq(adapter->msix_entries[vector].vector,
450 &igb_msix_tx, 0, ring->name,
451 &(adapter->tx_ring[i]));
454 ring->itr_register = E1000_EITR(0) + (vector << 2);
455 ring->itr_val = 976; /* ~4000 ints/sec */
458 for (i = 0; i < adapter->num_rx_queues; i++) {
459 struct igb_ring *ring = &(adapter->rx_ring[i]);
460 if (strlen(netdev->name) < (IFNAMSIZ - 5))
461 sprintf(ring->name, "%s-rx%d", netdev->name, i);
463 memcpy(ring->name, netdev->name, IFNAMSIZ);
464 err = request_irq(adapter->msix_entries[vector].vector,
465 &igb_msix_rx, 0, ring->name,
466 &(adapter->rx_ring[i]));
469 ring->itr_register = E1000_EITR(0) + (vector << 2);
470 ring->itr_val = adapter->itr;
471 /* overwrite the poll routine for MSIX, we've already done
473 ring->napi.poll = &igb_clean_rx_ring_msix;
477 err = request_irq(adapter->msix_entries[vector].vector,
478 &igb_msix_other, 0, netdev->name, netdev);
482 igb_configure_msix(adapter);
488 static void igb_reset_interrupt_capability(struct igb_adapter *adapter)
490 if (adapter->msix_entries) {
491 pci_disable_msix(adapter->pdev);
492 kfree(adapter->msix_entries);
493 adapter->msix_entries = NULL;
494 } else if (adapter->flags & IGB_FLAG_HAS_MSI)
495 pci_disable_msi(adapter->pdev);
501 * igb_set_interrupt_capability - set MSI or MSI-X if supported
503 * Attempt to configure interrupts using the best available
504 * capabilities of the hardware and kernel.
506 static void igb_set_interrupt_capability(struct igb_adapter *adapter)
511 numvecs = adapter->num_tx_queues + adapter->num_rx_queues + 1;
512 adapter->msix_entries = kcalloc(numvecs, sizeof(struct msix_entry),
514 if (!adapter->msix_entries)
517 for (i = 0; i < numvecs; i++)
518 adapter->msix_entries[i].entry = i;
520 err = pci_enable_msix(adapter->pdev,
521 adapter->msix_entries,
526 igb_reset_interrupt_capability(adapter);
528 /* If we can't do MSI-X, try MSI */
530 adapter->num_rx_queues = 1;
531 adapter->num_tx_queues = 1;
532 if (!pci_enable_msi(adapter->pdev))
533 adapter->flags |= IGB_FLAG_HAS_MSI;
535 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
536 /* Notify the stack of the (possibly) reduced Tx Queue count. */
537 adapter->netdev->egress_subqueue_count = adapter->num_tx_queues;
543 * igb_request_irq - initialize interrupts
545 * Attempts to configure interrupts using the best available
546 * capabilities of the hardware and kernel.
548 static int igb_request_irq(struct igb_adapter *adapter)
550 struct net_device *netdev = adapter->netdev;
551 struct e1000_hw *hw = &adapter->hw;
554 if (adapter->msix_entries) {
555 err = igb_request_msix(adapter);
558 /* fall back to MSI */
559 igb_reset_interrupt_capability(adapter);
560 if (!pci_enable_msi(adapter->pdev))
561 adapter->flags |= IGB_FLAG_HAS_MSI;
562 igb_free_all_tx_resources(adapter);
563 igb_free_all_rx_resources(adapter);
564 adapter->num_rx_queues = 1;
565 igb_alloc_queues(adapter);
567 switch (hw->mac.type) {
569 wr32(E1000_MSIXBM(0),
570 (E1000_EICR_RX_QUEUE0 | E1000_EIMS_OTHER));
573 wr32(E1000_IVAR0, E1000_IVAR_VALID);
580 if (adapter->flags & IGB_FLAG_HAS_MSI) {
581 err = request_irq(adapter->pdev->irq, &igb_intr_msi, 0,
582 netdev->name, netdev);
585 /* fall back to legacy interrupts */
586 igb_reset_interrupt_capability(adapter);
587 adapter->flags &= ~IGB_FLAG_HAS_MSI;
590 err = request_irq(adapter->pdev->irq, &igb_intr, IRQF_SHARED,
591 netdev->name, netdev);
594 dev_err(&adapter->pdev->dev, "Error %d getting interrupt\n",
601 static void igb_free_irq(struct igb_adapter *adapter)
603 struct net_device *netdev = adapter->netdev;
605 if (adapter->msix_entries) {
608 for (i = 0; i < adapter->num_tx_queues; i++)
609 free_irq(adapter->msix_entries[vector++].vector,
610 &(adapter->tx_ring[i]));
611 for (i = 0; i < adapter->num_rx_queues; i++)
612 free_irq(adapter->msix_entries[vector++].vector,
613 &(adapter->rx_ring[i]));
615 free_irq(adapter->msix_entries[vector++].vector, netdev);
619 free_irq(adapter->pdev->irq, netdev);
623 * igb_irq_disable - Mask off interrupt generation on the NIC
624 * @adapter: board private structure
626 static void igb_irq_disable(struct igb_adapter *adapter)
628 struct e1000_hw *hw = &adapter->hw;
630 if (adapter->msix_entries) {
632 wr32(E1000_EIMC, ~0);
639 synchronize_irq(adapter->pdev->irq);
643 * igb_irq_enable - Enable default interrupt generation settings
644 * @adapter: board private structure
646 static void igb_irq_enable(struct igb_adapter *adapter)
648 struct e1000_hw *hw = &adapter->hw;
650 if (adapter->msix_entries) {
651 wr32(E1000_EIAC, adapter->eims_enable_mask);
652 wr32(E1000_EIAM, adapter->eims_enable_mask);
653 wr32(E1000_EIMS, adapter->eims_enable_mask);
654 wr32(E1000_IMS, E1000_IMS_LSC);
656 wr32(E1000_IMS, IMS_ENABLE_MASK);
657 wr32(E1000_IAM, IMS_ENABLE_MASK);
661 static void igb_update_mng_vlan(struct igb_adapter *adapter)
663 struct net_device *netdev = adapter->netdev;
664 u16 vid = adapter->hw.mng_cookie.vlan_id;
665 u16 old_vid = adapter->mng_vlan_id;
666 if (adapter->vlgrp) {
667 if (!vlan_group_get_device(adapter->vlgrp, vid)) {
668 if (adapter->hw.mng_cookie.status &
669 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
670 igb_vlan_rx_add_vid(netdev, vid);
671 adapter->mng_vlan_id = vid;
673 adapter->mng_vlan_id = IGB_MNG_VLAN_NONE;
675 if ((old_vid != (u16)IGB_MNG_VLAN_NONE) &&
677 !vlan_group_get_device(adapter->vlgrp, old_vid))
678 igb_vlan_rx_kill_vid(netdev, old_vid);
680 adapter->mng_vlan_id = vid;
685 * igb_release_hw_control - release control of the h/w to f/w
686 * @adapter: address of board private structure
688 * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit.
689 * For ASF and Pass Through versions of f/w this means that the
690 * driver is no longer loaded.
693 static void igb_release_hw_control(struct igb_adapter *adapter)
695 struct e1000_hw *hw = &adapter->hw;
698 /* Let firmware take over control of h/w */
699 ctrl_ext = rd32(E1000_CTRL_EXT);
701 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
706 * igb_get_hw_control - get control of the h/w from f/w
707 * @adapter: address of board private structure
709 * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit.
710 * For ASF and Pass Through versions of f/w this means that
711 * the driver is loaded.
714 static void igb_get_hw_control(struct igb_adapter *adapter)
716 struct e1000_hw *hw = &adapter->hw;
719 /* Let firmware know the driver has taken over */
720 ctrl_ext = rd32(E1000_CTRL_EXT);
722 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
725 static void igb_init_manageability(struct igb_adapter *adapter)
727 struct e1000_hw *hw = &adapter->hw;
729 if (adapter->en_mng_pt) {
730 u32 manc2h = rd32(E1000_MANC2H);
731 u32 manc = rd32(E1000_MANC);
733 /* enable receiving management packets to the host */
734 /* this will probably generate destination unreachable messages
735 * from the host OS, but the packets will be handled on SMBUS */
736 manc |= E1000_MANC_EN_MNG2HOST;
737 #define E1000_MNG2HOST_PORT_623 (1 << 5)
738 #define E1000_MNG2HOST_PORT_664 (1 << 6)
739 manc2h |= E1000_MNG2HOST_PORT_623;
740 manc2h |= E1000_MNG2HOST_PORT_664;
741 wr32(E1000_MANC2H, manc2h);
743 wr32(E1000_MANC, manc);
748 * igb_configure - configure the hardware for RX and TX
749 * @adapter: private board structure
751 static void igb_configure(struct igb_adapter *adapter)
753 struct net_device *netdev = adapter->netdev;
756 igb_get_hw_control(adapter);
757 igb_set_multi(netdev);
759 igb_restore_vlan(adapter);
760 igb_init_manageability(adapter);
762 igb_configure_tx(adapter);
763 igb_setup_rctl(adapter);
764 igb_configure_rx(adapter);
766 igb_rx_fifo_flush_82575(&adapter->hw);
768 /* call IGB_DESC_UNUSED which always leaves
769 * at least 1 descriptor unused to make sure
770 * next_to_use != next_to_clean */
771 for (i = 0; i < adapter->num_rx_queues; i++) {
772 struct igb_ring *ring = &adapter->rx_ring[i];
773 igb_alloc_rx_buffers_adv(ring, IGB_DESC_UNUSED(ring));
777 adapter->tx_queue_len = netdev->tx_queue_len;
782 * igb_up - Open the interface and prepare it to handle traffic
783 * @adapter: board private structure
786 int igb_up(struct igb_adapter *adapter)
788 struct e1000_hw *hw = &adapter->hw;
791 /* hardware has been reset, we need to reload some things */
792 igb_configure(adapter);
794 clear_bit(__IGB_DOWN, &adapter->state);
796 for (i = 0; i < adapter->num_rx_queues; i++)
797 napi_enable(&adapter->rx_ring[i].napi);
798 if (adapter->msix_entries)
799 igb_configure_msix(adapter);
801 /* Clear any pending interrupts. */
803 igb_irq_enable(adapter);
805 /* Fire a link change interrupt to start the watchdog. */
806 wr32(E1000_ICS, E1000_ICS_LSC);
810 void igb_down(struct igb_adapter *adapter)
812 struct e1000_hw *hw = &adapter->hw;
813 struct net_device *netdev = adapter->netdev;
817 /* signal that we're down so the interrupt handler does not
818 * reschedule our watchdog timer */
819 set_bit(__IGB_DOWN, &adapter->state);
821 /* disable receives in the hardware */
822 rctl = rd32(E1000_RCTL);
823 wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN);
824 /* flush and sleep below */
826 netif_stop_queue(netdev);
827 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
828 for (i = 0; i < adapter->num_tx_queues; i++)
829 netif_stop_subqueue(netdev, i);
832 /* disable transmits in the hardware */
833 tctl = rd32(E1000_TCTL);
834 tctl &= ~E1000_TCTL_EN;
835 wr32(E1000_TCTL, tctl);
836 /* flush both disables and wait for them to finish */
840 for (i = 0; i < adapter->num_rx_queues; i++)
841 napi_disable(&adapter->rx_ring[i].napi);
843 igb_irq_disable(adapter);
845 del_timer_sync(&adapter->watchdog_timer);
846 del_timer_sync(&adapter->phy_info_timer);
848 netdev->tx_queue_len = adapter->tx_queue_len;
849 netif_carrier_off(netdev);
850 adapter->link_speed = 0;
851 adapter->link_duplex = 0;
853 if (!pci_channel_offline(adapter->pdev))
855 igb_clean_all_tx_rings(adapter);
856 igb_clean_all_rx_rings(adapter);
859 void igb_reinit_locked(struct igb_adapter *adapter)
861 WARN_ON(in_interrupt());
862 while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
866 clear_bit(__IGB_RESETTING, &adapter->state);
869 void igb_reset(struct igb_adapter *adapter)
871 struct e1000_hw *hw = &adapter->hw;
872 struct e1000_mac_info *mac = &hw->mac;
873 struct e1000_fc_info *fc = &hw->fc;
874 u32 pba = 0, tx_space, min_tx_space, min_rx_space;
877 /* Repartition Pba for greater than 9k mtu
878 * To take effect CTRL.RST is required.
880 if (mac->type != e1000_82576) {
887 if ((adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) &&
888 (mac->type < e1000_82576)) {
889 /* adjust PBA for jumbo frames */
890 wr32(E1000_PBA, pba);
892 /* To maintain wire speed transmits, the Tx FIFO should be
893 * large enough to accommodate two full transmit packets,
894 * rounded up to the next 1KB and expressed in KB. Likewise,
895 * the Rx FIFO should be large enough to accommodate at least
896 * one full receive packet and is similarly rounded up and
897 * expressed in KB. */
898 pba = rd32(E1000_PBA);
899 /* upper 16 bits has Tx packet buffer allocation size in KB */
900 tx_space = pba >> 16;
901 /* lower 16 bits has Rx packet buffer allocation size in KB */
903 /* the tx fifo also stores 16 bytes of information about the tx
904 * but don't include ethernet FCS because hardware appends it */
905 min_tx_space = (adapter->max_frame_size +
906 sizeof(struct e1000_tx_desc) -
908 min_tx_space = ALIGN(min_tx_space, 1024);
910 /* software strips receive CRC, so leave room for it */
911 min_rx_space = adapter->max_frame_size;
912 min_rx_space = ALIGN(min_rx_space, 1024);
915 /* If current Tx allocation is less than the min Tx FIFO size,
916 * and the min Tx FIFO size is less than the current Rx FIFO
917 * allocation, take space away from current Rx allocation */
918 if (tx_space < min_tx_space &&
919 ((min_tx_space - tx_space) < pba)) {
920 pba = pba - (min_tx_space - tx_space);
922 /* if short on rx space, rx wins and must trump tx
924 if (pba < min_rx_space)
927 wr32(E1000_PBA, pba);
930 /* flow control settings */
931 /* The high water mark must be low enough to fit one full frame
932 * (or the size used for early receive) above it in the Rx FIFO.
933 * Set it to the lower of:
934 * - 90% of the Rx FIFO size, or
935 * - the full Rx FIFO size minus one full frame */
936 hwm = min(((pba << 10) * 9 / 10),
937 ((pba << 10) - 2 * adapter->max_frame_size));
939 if (mac->type < e1000_82576) {
940 fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */
941 fc->low_water = fc->high_water - 8;
943 fc->high_water = hwm & 0xFFF0; /* 16-byte granularity */
944 fc->low_water = fc->high_water - 16;
946 fc->pause_time = 0xFFFF;
948 fc->type = fc->original_type;
950 /* Allow time for pending master requests to run */
951 adapter->hw.mac.ops.reset_hw(&adapter->hw);
954 if (adapter->hw.mac.ops.init_hw(&adapter->hw))
955 dev_err(&adapter->pdev->dev, "Hardware Error\n");
957 igb_update_mng_vlan(adapter);
959 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
960 wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE);
962 igb_reset_adaptive(&adapter->hw);
963 if (adapter->hw.phy.ops.get_phy_info)
964 adapter->hw.phy.ops.get_phy_info(&adapter->hw);
968 * igb_is_need_ioport - determine if an adapter needs ioport resources or not
969 * @pdev: PCI device information struct
971 * Returns true if an adapter needs ioport resources
973 static int igb_is_need_ioport(struct pci_dev *pdev)
975 switch (pdev->device) {
976 /* Currently there are no adapters that need ioport resources */
983 * igb_probe - Device Initialization Routine
984 * @pdev: PCI device information struct
985 * @ent: entry in igb_pci_tbl
987 * Returns 0 on success, negative on failure
989 * igb_probe initializes an adapter identified by a pci_dev structure.
990 * The OS initialization, configuring of the adapter private structure,
991 * and a hardware reset occur.
993 static int __devinit igb_probe(struct pci_dev *pdev,
994 const struct pci_device_id *ent)
996 struct net_device *netdev;
997 struct igb_adapter *adapter;
999 const struct e1000_info *ei = igb_info_tbl[ent->driver_data];
1000 unsigned long mmio_start, mmio_len;
1001 int i, err, pci_using_dac;
1002 u16 eeprom_data = 0;
1003 u16 eeprom_apme_mask = IGB_EEPROM_APME;
1005 int bars, need_ioport;
1007 /* do not allocate ioport bars when not needed */
1008 need_ioport = igb_is_need_ioport(pdev);
1010 bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO);
1011 err = pci_enable_device(pdev);
1013 bars = pci_select_bars(pdev, IORESOURCE_MEM);
1014 err = pci_enable_device_mem(pdev);
1020 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
1022 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
1026 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1028 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1030 dev_err(&pdev->dev, "No usable DMA "
1031 "configuration, aborting\n");
1037 err = pci_request_selected_regions(pdev, bars, igb_driver_name);
1041 pci_set_master(pdev);
1042 pci_save_state(pdev);
1045 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1046 netdev = alloc_etherdev_mq(sizeof(struct igb_adapter), IGB_MAX_TX_QUEUES);
1048 netdev = alloc_etherdev(sizeof(struct igb_adapter));
1049 #endif /* CONFIG_NETDEVICES_MULTIQUEUE */
1051 goto err_alloc_etherdev;
1053 SET_NETDEV_DEV(netdev, &pdev->dev);
1055 pci_set_drvdata(pdev, netdev);
1056 adapter = netdev_priv(netdev);
1057 adapter->netdev = netdev;
1058 adapter->pdev = pdev;
1061 adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE;
1062 adapter->bars = bars;
1063 adapter->need_ioport = need_ioport;
1065 mmio_start = pci_resource_start(pdev, 0);
1066 mmio_len = pci_resource_len(pdev, 0);
1069 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
1070 if (!adapter->hw.hw_addr)
1073 netdev->open = &igb_open;
1074 netdev->stop = &igb_close;
1075 netdev->get_stats = &igb_get_stats;
1076 netdev->set_multicast_list = &igb_set_multi;
1077 netdev->set_mac_address = &igb_set_mac;
1078 netdev->change_mtu = &igb_change_mtu;
1079 netdev->do_ioctl = &igb_ioctl;
1080 igb_set_ethtool_ops(netdev);
1081 netdev->tx_timeout = &igb_tx_timeout;
1082 netdev->watchdog_timeo = 5 * HZ;
1083 netdev->vlan_rx_register = igb_vlan_rx_register;
1084 netdev->vlan_rx_add_vid = igb_vlan_rx_add_vid;
1085 netdev->vlan_rx_kill_vid = igb_vlan_rx_kill_vid;
1086 #ifdef CONFIG_NET_POLL_CONTROLLER
1087 netdev->poll_controller = igb_netpoll;
1089 netdev->hard_start_xmit = &igb_xmit_frame_adv;
1091 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
1093 netdev->mem_start = mmio_start;
1094 netdev->mem_end = mmio_start + mmio_len;
1096 /* PCI config space info */
1097 hw->vendor_id = pdev->vendor;
1098 hw->device_id = pdev->device;
1099 hw->revision_id = pdev->revision;
1100 hw->subsystem_vendor_id = pdev->subsystem_vendor;
1101 hw->subsystem_device_id = pdev->subsystem_device;
1103 /* setup the private structure */
1105 /* Copy the default MAC, PHY and NVM function pointers */
1106 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
1107 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
1108 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
1109 /* Initialize skew-specific constants */
1110 err = ei->get_invariants(hw);
1114 err = igb_sw_init(adapter);
1118 igb_get_bus_info_pcie(hw);
1121 switch (hw->mac.type) {
1124 adapter->flags |= IGB_FLAG_HAS_DCA;
1125 adapter->flags |= IGB_FLAG_NEED_CTX_IDX;
1131 hw->phy.autoneg_wait_to_complete = false;
1132 hw->mac.adaptive_ifs = true;
1134 /* Copper options */
1135 if (hw->phy.media_type == e1000_media_type_copper) {
1136 hw->phy.mdix = AUTO_ALL_MODES;
1137 hw->phy.disable_polarity_correction = false;
1138 hw->phy.ms_type = e1000_ms_hw_default;
1141 if (igb_check_reset_block(hw))
1142 dev_info(&pdev->dev,
1143 "PHY reset is blocked due to SOL/IDER session.\n");
1145 netdev->features = NETIF_F_SG |
1147 NETIF_F_HW_VLAN_TX |
1148 NETIF_F_HW_VLAN_RX |
1149 NETIF_F_HW_VLAN_FILTER;
1151 netdev->features |= NETIF_F_TSO;
1152 netdev->features |= NETIF_F_TSO6;
1154 #ifdef CONFIG_IGB_LRO
1155 netdev->features |= NETIF_F_LRO;
1158 netdev->vlan_features |= NETIF_F_TSO;
1159 netdev->vlan_features |= NETIF_F_TSO6;
1160 netdev->vlan_features |= NETIF_F_HW_CSUM;
1161 netdev->vlan_features |= NETIF_F_SG;
1164 netdev->features |= NETIF_F_HIGHDMA;
1166 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1167 netdev->features |= NETIF_F_MULTI_QUEUE;
1170 netdev->features |= NETIF_F_LLTX;
1171 adapter->en_mng_pt = igb_enable_mng_pass_thru(&adapter->hw);
1173 /* before reading the NVM, reset the controller to put the device in a
1174 * known good starting state */
1175 hw->mac.ops.reset_hw(hw);
1177 /* make sure the NVM is good */
1178 if (igb_validate_nvm_checksum(hw) < 0) {
1179 dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n");
1184 /* copy the MAC address out of the NVM */
1185 if (hw->mac.ops.read_mac_addr(hw))
1186 dev_err(&pdev->dev, "NVM Read Error\n");
1188 memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len);
1189 memcpy(netdev->perm_addr, hw->mac.addr, netdev->addr_len);
1191 if (!is_valid_ether_addr(netdev->perm_addr)) {
1192 dev_err(&pdev->dev, "Invalid MAC Address\n");
1197 init_timer(&adapter->watchdog_timer);
1198 adapter->watchdog_timer.function = &igb_watchdog;
1199 adapter->watchdog_timer.data = (unsigned long) adapter;
1201 init_timer(&adapter->phy_info_timer);
1202 adapter->phy_info_timer.function = &igb_update_phy_info;
1203 adapter->phy_info_timer.data = (unsigned long) adapter;
1205 INIT_WORK(&adapter->reset_task, igb_reset_task);
1206 INIT_WORK(&adapter->watchdog_task, igb_watchdog_task);
1208 /* Initialize link & ring properties that are user-changeable */
1209 adapter->tx_ring->count = 256;
1210 for (i = 0; i < adapter->num_tx_queues; i++)
1211 adapter->tx_ring[i].count = adapter->tx_ring->count;
1212 adapter->rx_ring->count = 256;
1213 for (i = 0; i < adapter->num_rx_queues; i++)
1214 adapter->rx_ring[i].count = adapter->rx_ring->count;
1216 adapter->fc_autoneg = true;
1217 hw->mac.autoneg = true;
1218 hw->phy.autoneg_advertised = 0x2f;
1220 hw->fc.original_type = e1000_fc_default;
1221 hw->fc.type = e1000_fc_default;
1223 adapter->itr_setting = 3;
1224 adapter->itr = IGB_START_ITR;
1226 igb_validate_mdi_setting(hw);
1228 adapter->rx_csum = 1;
1230 /* Initial Wake on LAN setting If APM wake is enabled in the EEPROM,
1231 * enable the ACPI Magic Packet filter
1234 if (hw->bus.func == 0 ||
1235 hw->device_id == E1000_DEV_ID_82575EB_COPPER)
1236 hw->nvm.ops.read_nvm(hw, NVM_INIT_CONTROL3_PORT_A, 1,
1239 if (eeprom_data & eeprom_apme_mask)
1240 adapter->eeprom_wol |= E1000_WUFC_MAG;
1242 /* now that we have the eeprom settings, apply the special cases where
1243 * the eeprom may be wrong or the board simply won't support wake on
1244 * lan on a particular port */
1245 switch (pdev->device) {
1246 case E1000_DEV_ID_82575GB_QUAD_COPPER:
1247 adapter->eeprom_wol = 0;
1249 case E1000_DEV_ID_82575EB_FIBER_SERDES:
1250 case E1000_DEV_ID_82576_FIBER:
1251 case E1000_DEV_ID_82576_SERDES:
1252 /* Wake events only supported on port A for dual fiber
1253 * regardless of eeprom setting */
1254 if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1)
1255 adapter->eeprom_wol = 0;
1257 case E1000_DEV_ID_82576_QUAD_COPPER:
1258 /* if quad port adapter, disable WoL on all but port A */
1259 if (global_quad_port_a != 0)
1260 adapter->eeprom_wol = 0;
1262 adapter->flags |= IGB_FLAG_QUAD_PORT_A;
1263 /* Reset for multiple quad port adapters */
1264 if (++global_quad_port_a == 4)
1265 global_quad_port_a = 0;
1269 /* initialize the wol settings based on the eeprom settings */
1270 adapter->wol = adapter->eeprom_wol;
1272 /* reset the hardware with the new settings */
1275 /* let the f/w know that the h/w is now under the control of the
1277 igb_get_hw_control(adapter);
1279 /* tell the stack to leave us alone until igb_open() is called */
1280 netif_carrier_off(netdev);
1281 netif_stop_queue(netdev);
1282 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1283 for (i = 0; i < adapter->num_tx_queues; i++)
1284 netif_stop_subqueue(netdev, i);
1287 strcpy(netdev->name, "eth%d");
1288 err = register_netdev(netdev);
1293 if ((adapter->flags & IGB_FLAG_HAS_DCA) &&
1294 (dca_add_requester(&pdev->dev) == 0)) {
1295 adapter->flags |= IGB_FLAG_DCA_ENABLED;
1296 dev_info(&pdev->dev, "DCA enabled\n");
1297 /* Always use CB2 mode, difference is masked
1298 * in the CB driver. */
1299 wr32(E1000_DCA_CTRL, 2);
1300 igb_setup_dca(adapter);
1304 dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n");
1305 /* print bus type/speed/width info */
1306 dev_info(&pdev->dev,
1307 "%s: (PCIe:%s:%s) %02x:%02x:%02x:%02x:%02x:%02x\n",
1309 ((hw->bus.speed == e1000_bus_speed_2500)
1310 ? "2.5Gb/s" : "unknown"),
1311 ((hw->bus.width == e1000_bus_width_pcie_x4)
1312 ? "Width x4" : (hw->bus.width == e1000_bus_width_pcie_x1)
1313 ? "Width x1" : "unknown"),
1314 netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2],
1315 netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5]);
1317 igb_read_part_num(hw, &part_num);
1318 dev_info(&pdev->dev, "%s: PBA No: %06x-%03x\n", netdev->name,
1319 (part_num >> 8), (part_num & 0xff));
1321 dev_info(&pdev->dev,
1322 "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n",
1323 adapter->msix_entries ? "MSI-X" :
1324 (adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy",
1325 adapter->num_rx_queues, adapter->num_tx_queues);
1330 igb_release_hw_control(adapter);
1332 if (!igb_check_reset_block(hw))
1333 hw->phy.ops.reset_phy(hw);
1335 if (hw->flash_address)
1336 iounmap(hw->flash_address);
1338 igb_remove_device(hw);
1339 igb_free_queues(adapter);
1342 iounmap(hw->hw_addr);
1344 free_netdev(netdev);
1346 pci_release_selected_regions(pdev, bars);
1349 pci_disable_device(pdev);
1354 * igb_remove - Device Removal Routine
1355 * @pdev: PCI device information struct
1357 * igb_remove is called by the PCI subsystem to alert the driver
1358 * that it should release a PCI device. The could be caused by a
1359 * Hot-Plug event, or because the driver is going to be removed from
1362 static void __devexit igb_remove(struct pci_dev *pdev)
1364 struct net_device *netdev = pci_get_drvdata(pdev);
1365 struct igb_adapter *adapter = netdev_priv(netdev);
1367 struct e1000_hw *hw = &adapter->hw;
1370 /* flush_scheduled work may reschedule our watchdog task, so
1371 * explicitly disable watchdog tasks from being rescheduled */
1372 set_bit(__IGB_DOWN, &adapter->state);
1373 del_timer_sync(&adapter->watchdog_timer);
1374 del_timer_sync(&adapter->phy_info_timer);
1376 flush_scheduled_work();
1379 if (adapter->flags & IGB_FLAG_DCA_ENABLED) {
1380 dev_info(&pdev->dev, "DCA disabled\n");
1381 dca_remove_requester(&pdev->dev);
1382 adapter->flags &= ~IGB_FLAG_DCA_ENABLED;
1383 wr32(E1000_DCA_CTRL, 1);
1387 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1388 * would have already happened in close and is redundant. */
1389 igb_release_hw_control(adapter);
1391 unregister_netdev(netdev);
1393 if (!igb_check_reset_block(&adapter->hw))
1394 adapter->hw.phy.ops.reset_phy(&adapter->hw);
1396 igb_remove_device(&adapter->hw);
1397 igb_reset_interrupt_capability(adapter);
1399 igb_free_queues(adapter);
1401 iounmap(adapter->hw.hw_addr);
1402 if (adapter->hw.flash_address)
1403 iounmap(adapter->hw.flash_address);
1404 pci_release_selected_regions(pdev, adapter->bars);
1406 free_netdev(netdev);
1408 pci_disable_device(pdev);
1412 * igb_sw_init - Initialize general software structures (struct igb_adapter)
1413 * @adapter: board private structure to initialize
1415 * igb_sw_init initializes the Adapter private data structure.
1416 * Fields are initialized based on PCI device information and
1417 * OS network device settings (MTU size).
1419 static int __devinit igb_sw_init(struct igb_adapter *adapter)
1421 struct e1000_hw *hw = &adapter->hw;
1422 struct net_device *netdev = adapter->netdev;
1423 struct pci_dev *pdev = adapter->pdev;
1425 pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word);
1427 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
1428 adapter->rx_ps_hdr_size = 0; /* disable packet split */
1429 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
1430 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
1432 /* Number of supported queues. */
1433 /* Having more queues than CPUs doesn't make sense. */
1434 adapter->num_rx_queues = min((u32)IGB_MAX_RX_QUEUES, (u32)num_online_cpus());
1435 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1436 adapter->num_tx_queues = min(IGB_MAX_TX_QUEUES, num_online_cpus());
1438 adapter->num_tx_queues = 1;
1439 #endif /* CONFIG_NET_MULTI_QUEUE_DEVICE */
1441 /* This call may decrease the number of queues depending on
1442 * interrupt mode. */
1443 igb_set_interrupt_capability(adapter);
1445 if (igb_alloc_queues(adapter)) {
1446 dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
1450 /* Explicitly disable IRQ since the NIC can be in any state. */
1451 igb_irq_disable(adapter);
1453 set_bit(__IGB_DOWN, &adapter->state);
1458 * igb_open - Called when a network interface is made active
1459 * @netdev: network interface device structure
1461 * Returns 0 on success, negative value on failure
1463 * The open entry point is called when a network interface is made
1464 * active by the system (IFF_UP). At this point all resources needed
1465 * for transmit and receive operations are allocated, the interrupt
1466 * handler is registered with the OS, the watchdog timer is started,
1467 * and the stack is notified that the interface is ready.
1469 static int igb_open(struct net_device *netdev)
1471 struct igb_adapter *adapter = netdev_priv(netdev);
1472 struct e1000_hw *hw = &adapter->hw;
1476 /* disallow open during test */
1477 if (test_bit(__IGB_TESTING, &adapter->state))
1480 /* allocate transmit descriptors */
1481 err = igb_setup_all_tx_resources(adapter);
1485 /* allocate receive descriptors */
1486 err = igb_setup_all_rx_resources(adapter);
1490 /* e1000_power_up_phy(adapter); */
1492 adapter->mng_vlan_id = IGB_MNG_VLAN_NONE;
1493 if ((adapter->hw.mng_cookie.status &
1494 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
1495 igb_update_mng_vlan(adapter);
1497 /* before we allocate an interrupt, we must be ready to handle it.
1498 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
1499 * as soon as we call pci_request_irq, so we have to setup our
1500 * clean_rx handler before we do so. */
1501 igb_configure(adapter);
1503 err = igb_request_irq(adapter);
1507 /* From here on the code is the same as igb_up() */
1508 clear_bit(__IGB_DOWN, &adapter->state);
1510 for (i = 0; i < adapter->num_rx_queues; i++)
1511 napi_enable(&adapter->rx_ring[i].napi);
1513 /* Clear any pending interrupts. */
1516 igb_irq_enable(adapter);
1518 /* Fire a link status change interrupt to start the watchdog. */
1519 wr32(E1000_ICS, E1000_ICS_LSC);
1524 igb_release_hw_control(adapter);
1525 /* e1000_power_down_phy(adapter); */
1526 igb_free_all_rx_resources(adapter);
1528 igb_free_all_tx_resources(adapter);
1536 * igb_close - Disables a network interface
1537 * @netdev: network interface device structure
1539 * Returns 0, this is not allowed to fail
1541 * The close entry point is called when an interface is de-activated
1542 * by the OS. The hardware is still under the driver's control, but
1543 * needs to be disabled. A global MAC reset is issued to stop the
1544 * hardware, and all transmit and receive resources are freed.
1546 static int igb_close(struct net_device *netdev)
1548 struct igb_adapter *adapter = netdev_priv(netdev);
1550 WARN_ON(test_bit(__IGB_RESETTING, &adapter->state));
1553 igb_free_irq(adapter);
1555 igb_free_all_tx_resources(adapter);
1556 igb_free_all_rx_resources(adapter);
1558 /* kill manageability vlan ID if supported, but not if a vlan with
1559 * the same ID is registered on the host OS (let 8021q kill it) */
1560 if ((adapter->hw.mng_cookie.status &
1561 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
1563 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id)))
1564 igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
1570 * igb_setup_tx_resources - allocate Tx resources (Descriptors)
1571 * @adapter: board private structure
1572 * @tx_ring: tx descriptor ring (for a specific queue) to setup
1574 * Return 0 on success, negative on failure
1577 int igb_setup_tx_resources(struct igb_adapter *adapter,
1578 struct igb_ring *tx_ring)
1580 struct pci_dev *pdev = adapter->pdev;
1583 size = sizeof(struct igb_buffer) * tx_ring->count;
1584 tx_ring->buffer_info = vmalloc(size);
1585 if (!tx_ring->buffer_info)
1587 memset(tx_ring->buffer_info, 0, size);
1589 /* round up to nearest 4K */
1590 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc)
1592 tx_ring->size = ALIGN(tx_ring->size, 4096);
1594 tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size,
1600 tx_ring->adapter = adapter;
1601 tx_ring->next_to_use = 0;
1602 tx_ring->next_to_clean = 0;
1606 vfree(tx_ring->buffer_info);
1607 dev_err(&adapter->pdev->dev,
1608 "Unable to allocate memory for the transmit descriptor ring\n");
1613 * igb_setup_all_tx_resources - wrapper to allocate Tx resources
1614 * (Descriptors) for all queues
1615 * @adapter: board private structure
1617 * Return 0 on success, negative on failure
1619 static int igb_setup_all_tx_resources(struct igb_adapter *adapter)
1622 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1626 for (i = 0; i < adapter->num_tx_queues; i++) {
1627 err = igb_setup_tx_resources(adapter, &adapter->tx_ring[i]);
1629 dev_err(&adapter->pdev->dev,
1630 "Allocation for Tx Queue %u failed\n", i);
1631 for (i--; i >= 0; i--)
1632 igb_free_tx_resources(&adapter->tx_ring[i]);
1637 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1638 for (i = 0; i < IGB_MAX_TX_QUEUES; i++) {
1639 r_idx = i % adapter->num_tx_queues;
1640 adapter->multi_tx_table[i] = &adapter->tx_ring[r_idx];
1647 * igb_configure_tx - Configure transmit Unit after Reset
1648 * @adapter: board private structure
1650 * Configure the Tx unit of the MAC after a reset.
1652 static void igb_configure_tx(struct igb_adapter *adapter)
1655 struct e1000_hw *hw = &adapter->hw;
1660 for (i = 0; i < adapter->num_tx_queues; i++) {
1661 struct igb_ring *ring = &(adapter->tx_ring[i]);
1663 wr32(E1000_TDLEN(i),
1664 ring->count * sizeof(struct e1000_tx_desc));
1666 wr32(E1000_TDBAL(i),
1667 tdba & 0x00000000ffffffffULL);
1668 wr32(E1000_TDBAH(i), tdba >> 32);
1670 tdwba = ring->dma + ring->count * sizeof(struct e1000_tx_desc);
1671 tdwba |= 1; /* enable head wb */
1672 wr32(E1000_TDWBAL(i),
1673 tdwba & 0x00000000ffffffffULL);
1674 wr32(E1000_TDWBAH(i), tdwba >> 32);
1676 ring->head = E1000_TDH(i);
1677 ring->tail = E1000_TDT(i);
1678 writel(0, hw->hw_addr + ring->tail);
1679 writel(0, hw->hw_addr + ring->head);
1680 txdctl = rd32(E1000_TXDCTL(i));
1681 txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
1682 wr32(E1000_TXDCTL(i), txdctl);
1684 /* Turn off Relaxed Ordering on head write-backs. The
1685 * writebacks MUST be delivered in order or it will
1686 * completely screw up our bookeeping.
1688 txctrl = rd32(E1000_DCA_TXCTRL(i));
1689 txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN;
1690 wr32(E1000_DCA_TXCTRL(i), txctrl);
1695 /* Use the default values for the Tx Inter Packet Gap (IPG) timer */
1697 /* Program the Transmit Control Register */
1699 tctl = rd32(E1000_TCTL);
1700 tctl &= ~E1000_TCTL_CT;
1701 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
1702 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
1704 igb_config_collision_dist(hw);
1706 /* Setup Transmit Descriptor Settings for eop descriptor */
1707 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_RS;
1709 /* Enable transmits */
1710 tctl |= E1000_TCTL_EN;
1712 wr32(E1000_TCTL, tctl);
1716 * igb_setup_rx_resources - allocate Rx resources (Descriptors)
1717 * @adapter: board private structure
1718 * @rx_ring: rx descriptor ring (for a specific queue) to setup
1720 * Returns 0 on success, negative on failure
1723 int igb_setup_rx_resources(struct igb_adapter *adapter,
1724 struct igb_ring *rx_ring)
1726 struct pci_dev *pdev = adapter->pdev;
1729 #ifdef CONFIG_IGB_LRO
1730 size = sizeof(struct net_lro_desc) * MAX_LRO_DESCRIPTORS;
1731 rx_ring->lro_mgr.lro_arr = vmalloc(size);
1732 if (!rx_ring->lro_mgr.lro_arr)
1734 memset(rx_ring->lro_mgr.lro_arr, 0, size);
1737 size = sizeof(struct igb_buffer) * rx_ring->count;
1738 rx_ring->buffer_info = vmalloc(size);
1739 if (!rx_ring->buffer_info)
1741 memset(rx_ring->buffer_info, 0, size);
1743 desc_len = sizeof(union e1000_adv_rx_desc);
1745 /* Round up to nearest 4K */
1746 rx_ring->size = rx_ring->count * desc_len;
1747 rx_ring->size = ALIGN(rx_ring->size, 4096);
1749 rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size,
1755 rx_ring->next_to_clean = 0;
1756 rx_ring->next_to_use = 0;
1758 rx_ring->adapter = adapter;
1763 #ifdef CONFIG_IGB_LRO
1764 vfree(rx_ring->lro_mgr.lro_arr);
1765 rx_ring->lro_mgr.lro_arr = NULL;
1767 vfree(rx_ring->buffer_info);
1768 dev_err(&adapter->pdev->dev, "Unable to allocate memory for "
1769 "the receive descriptor ring\n");
1774 * igb_setup_all_rx_resources - wrapper to allocate Rx resources
1775 * (Descriptors) for all queues
1776 * @adapter: board private structure
1778 * Return 0 on success, negative on failure
1780 static int igb_setup_all_rx_resources(struct igb_adapter *adapter)
1784 for (i = 0; i < adapter->num_rx_queues; i++) {
1785 err = igb_setup_rx_resources(adapter, &adapter->rx_ring[i]);
1787 dev_err(&adapter->pdev->dev,
1788 "Allocation for Rx Queue %u failed\n", i);
1789 for (i--; i >= 0; i--)
1790 igb_free_rx_resources(&adapter->rx_ring[i]);
1799 * igb_setup_rctl - configure the receive control registers
1800 * @adapter: Board private structure
1802 static void igb_setup_rctl(struct igb_adapter *adapter)
1804 struct e1000_hw *hw = &adapter->hw;
1809 rctl = rd32(E1000_RCTL);
1811 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
1813 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
1814 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
1815 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
1818 * enable stripping of CRC. It's unlikely this will break BMC
1819 * redirection as it did with e1000. Newer features require
1820 * that the HW strips the CRC.
1822 rctl |= E1000_RCTL_SECRC;
1824 rctl &= ~E1000_RCTL_SBP;
1826 if (adapter->netdev->mtu <= ETH_DATA_LEN)
1827 rctl &= ~E1000_RCTL_LPE;
1829 rctl |= E1000_RCTL_LPE;
1830 if (adapter->rx_buffer_len <= IGB_RXBUFFER_2048) {
1831 /* Setup buffer sizes */
1832 rctl &= ~E1000_RCTL_SZ_4096;
1833 rctl |= E1000_RCTL_BSEX;
1834 switch (adapter->rx_buffer_len) {
1835 case IGB_RXBUFFER_256:
1836 rctl |= E1000_RCTL_SZ_256;
1837 rctl &= ~E1000_RCTL_BSEX;
1839 case IGB_RXBUFFER_512:
1840 rctl |= E1000_RCTL_SZ_512;
1841 rctl &= ~E1000_RCTL_BSEX;
1843 case IGB_RXBUFFER_1024:
1844 rctl |= E1000_RCTL_SZ_1024;
1845 rctl &= ~E1000_RCTL_BSEX;
1847 case IGB_RXBUFFER_2048:
1849 rctl |= E1000_RCTL_SZ_2048;
1850 rctl &= ~E1000_RCTL_BSEX;
1854 rctl &= ~E1000_RCTL_BSEX;
1855 srrctl = adapter->rx_buffer_len >> E1000_SRRCTL_BSIZEPKT_SHIFT;
1858 /* 82575 and greater support packet-split where the protocol
1859 * header is placed in skb->data and the packet data is
1860 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1861 * In the case of a non-split, skb->data is linearly filled,
1862 * followed by the page buffers. Therefore, skb->data is
1863 * sized to hold the largest protocol header.
1865 /* allocations using alloc_page take too long for regular MTU
1866 * so only enable packet split for jumbo frames */
1867 if (rctl & E1000_RCTL_LPE) {
1868 adapter->rx_ps_hdr_size = IGB_RXBUFFER_128;
1869 srrctl |= adapter->rx_ps_hdr_size <<
1870 E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
1871 srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
1873 adapter->rx_ps_hdr_size = 0;
1874 srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
1877 for (i = 0; i < adapter->num_rx_queues; i++)
1878 wr32(E1000_SRRCTL(i), srrctl);
1880 wr32(E1000_RCTL, rctl);
1884 * igb_configure_rx - Configure receive Unit after Reset
1885 * @adapter: board private structure
1887 * Configure the Rx unit of the MAC after a reset.
1889 static void igb_configure_rx(struct igb_adapter *adapter)
1892 struct e1000_hw *hw = &adapter->hw;
1897 /* disable receives while setting up the descriptors */
1898 rctl = rd32(E1000_RCTL);
1899 wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN);
1903 if (adapter->itr_setting > 3)
1904 wr32(E1000_ITR, adapter->itr);
1906 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1907 * the Base and Length of the Rx Descriptor Ring */
1908 for (i = 0; i < adapter->num_rx_queues; i++) {
1909 struct igb_ring *ring = &(adapter->rx_ring[i]);
1911 wr32(E1000_RDBAL(i),
1912 rdba & 0x00000000ffffffffULL);
1913 wr32(E1000_RDBAH(i), rdba >> 32);
1914 wr32(E1000_RDLEN(i),
1915 ring->count * sizeof(union e1000_adv_rx_desc));
1917 ring->head = E1000_RDH(i);
1918 ring->tail = E1000_RDT(i);
1919 writel(0, hw->hw_addr + ring->tail);
1920 writel(0, hw->hw_addr + ring->head);
1922 rxdctl = rd32(E1000_RXDCTL(i));
1923 rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
1924 rxdctl &= 0xFFF00000;
1925 rxdctl |= IGB_RX_PTHRESH;
1926 rxdctl |= IGB_RX_HTHRESH << 8;
1927 rxdctl |= IGB_RX_WTHRESH << 16;
1928 wr32(E1000_RXDCTL(i), rxdctl);
1929 #ifdef CONFIG_IGB_LRO
1930 /* Intitial LRO Settings */
1931 ring->lro_mgr.max_aggr = MAX_LRO_AGGR;
1932 ring->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1933 ring->lro_mgr.get_skb_header = igb_get_skb_hdr;
1934 ring->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1935 ring->lro_mgr.dev = adapter->netdev;
1936 ring->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1937 ring->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1941 if (adapter->num_rx_queues > 1) {
1950 get_random_bytes(&random[0], 40);
1952 if (hw->mac.type >= e1000_82576)
1956 for (j = 0; j < (32 * 4); j++) {
1958 (j % adapter->num_rx_queues) << shift;
1961 hw->hw_addr + E1000_RETA(0) + (j & ~3));
1963 mrqc = E1000_MRQC_ENABLE_RSS_4Q;
1965 /* Fill out hash function seeds */
1966 for (j = 0; j < 10; j++)
1967 array_wr32(E1000_RSSRK(0), j, random[j]);
1969 mrqc |= (E1000_MRQC_RSS_FIELD_IPV4 |
1970 E1000_MRQC_RSS_FIELD_IPV4_TCP);
1971 mrqc |= (E1000_MRQC_RSS_FIELD_IPV6 |
1972 E1000_MRQC_RSS_FIELD_IPV6_TCP);
1973 mrqc |= (E1000_MRQC_RSS_FIELD_IPV4_UDP |
1974 E1000_MRQC_RSS_FIELD_IPV6_UDP);
1975 mrqc |= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX |
1976 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX);
1979 wr32(E1000_MRQC, mrqc);
1981 /* Multiqueue and raw packet checksumming are mutually
1982 * exclusive. Note that this not the same as TCP/IP
1983 * checksumming, which works fine. */
1984 rxcsum = rd32(E1000_RXCSUM);
1985 rxcsum |= E1000_RXCSUM_PCSD;
1986 wr32(E1000_RXCSUM, rxcsum);
1988 /* Enable Receive Checksum Offload for TCP and UDP */
1989 rxcsum = rd32(E1000_RXCSUM);
1990 if (adapter->rx_csum) {
1991 rxcsum |= E1000_RXCSUM_TUOFL;
1993 /* Enable IPv4 payload checksum for UDP fragments
1994 * Must be used in conjunction with packet-split. */
1995 if (adapter->rx_ps_hdr_size)
1996 rxcsum |= E1000_RXCSUM_IPPCSE;
1998 rxcsum &= ~E1000_RXCSUM_TUOFL;
1999 /* don't need to clear IPPCSE as it defaults to 0 */
2001 wr32(E1000_RXCSUM, rxcsum);
2006 adapter->max_frame_size + VLAN_TAG_SIZE);
2008 wr32(E1000_RLPML, adapter->max_frame_size);
2010 /* Enable Receives */
2011 wr32(E1000_RCTL, rctl);
2015 * igb_free_tx_resources - Free Tx Resources per Queue
2016 * @adapter: board private structure
2017 * @tx_ring: Tx descriptor ring for a specific queue
2019 * Free all transmit software resources
2021 static void igb_free_tx_resources(struct igb_ring *tx_ring)
2023 struct pci_dev *pdev = tx_ring->adapter->pdev;
2025 igb_clean_tx_ring(tx_ring);
2027 vfree(tx_ring->buffer_info);
2028 tx_ring->buffer_info = NULL;
2030 pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
2032 tx_ring->desc = NULL;
2036 * igb_free_all_tx_resources - Free Tx Resources for All Queues
2037 * @adapter: board private structure
2039 * Free all transmit software resources
2041 static void igb_free_all_tx_resources(struct igb_adapter *adapter)
2045 for (i = 0; i < adapter->num_tx_queues; i++)
2046 igb_free_tx_resources(&adapter->tx_ring[i]);
2049 static void igb_unmap_and_free_tx_resource(struct igb_adapter *adapter,
2050 struct igb_buffer *buffer_info)
2052 if (buffer_info->dma) {
2053 pci_unmap_page(adapter->pdev,
2055 buffer_info->length,
2057 buffer_info->dma = 0;
2059 if (buffer_info->skb) {
2060 dev_kfree_skb_any(buffer_info->skb);
2061 buffer_info->skb = NULL;
2063 buffer_info->time_stamp = 0;
2064 /* buffer_info must be completely set up in the transmit path */
2068 * igb_clean_tx_ring - Free Tx Buffers
2069 * @adapter: board private structure
2070 * @tx_ring: ring to be cleaned
2072 static void igb_clean_tx_ring(struct igb_ring *tx_ring)
2074 struct igb_adapter *adapter = tx_ring->adapter;
2075 struct igb_buffer *buffer_info;
2079 if (!tx_ring->buffer_info)
2081 /* Free all the Tx ring sk_buffs */
2083 for (i = 0; i < tx_ring->count; i++) {
2084 buffer_info = &tx_ring->buffer_info[i];
2085 igb_unmap_and_free_tx_resource(adapter, buffer_info);
2088 size = sizeof(struct igb_buffer) * tx_ring->count;
2089 memset(tx_ring->buffer_info, 0, size);
2091 /* Zero out the descriptor ring */
2093 memset(tx_ring->desc, 0, tx_ring->size);
2095 tx_ring->next_to_use = 0;
2096 tx_ring->next_to_clean = 0;
2098 writel(0, adapter->hw.hw_addr + tx_ring->head);
2099 writel(0, adapter->hw.hw_addr + tx_ring->tail);
2103 * igb_clean_all_tx_rings - Free Tx Buffers for all queues
2104 * @adapter: board private structure
2106 static void igb_clean_all_tx_rings(struct igb_adapter *adapter)
2110 for (i = 0; i < adapter->num_tx_queues; i++)
2111 igb_clean_tx_ring(&adapter->tx_ring[i]);
2115 * igb_free_rx_resources - Free Rx Resources
2116 * @adapter: board private structure
2117 * @rx_ring: ring to clean the resources from
2119 * Free all receive software resources
2121 static void igb_free_rx_resources(struct igb_ring *rx_ring)
2123 struct pci_dev *pdev = rx_ring->adapter->pdev;
2125 igb_clean_rx_ring(rx_ring);
2127 vfree(rx_ring->buffer_info);
2128 rx_ring->buffer_info = NULL;
2130 #ifdef CONFIG_IGB_LRO
2131 vfree(rx_ring->lro_mgr.lro_arr);
2132 rx_ring->lro_mgr.lro_arr = NULL;
2135 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
2137 rx_ring->desc = NULL;
2141 * igb_free_all_rx_resources - Free Rx Resources for All Queues
2142 * @adapter: board private structure
2144 * Free all receive software resources
2146 static void igb_free_all_rx_resources(struct igb_adapter *adapter)
2150 for (i = 0; i < adapter->num_rx_queues; i++)
2151 igb_free_rx_resources(&adapter->rx_ring[i]);
2155 * igb_clean_rx_ring - Free Rx Buffers per Queue
2156 * @adapter: board private structure
2157 * @rx_ring: ring to free buffers from
2159 static void igb_clean_rx_ring(struct igb_ring *rx_ring)
2161 struct igb_adapter *adapter = rx_ring->adapter;
2162 struct igb_buffer *buffer_info;
2163 struct pci_dev *pdev = adapter->pdev;
2167 if (!rx_ring->buffer_info)
2169 /* Free all the Rx ring sk_buffs */
2170 for (i = 0; i < rx_ring->count; i++) {
2171 buffer_info = &rx_ring->buffer_info[i];
2172 if (buffer_info->dma) {
2173 if (adapter->rx_ps_hdr_size)
2174 pci_unmap_single(pdev, buffer_info->dma,
2175 adapter->rx_ps_hdr_size,
2176 PCI_DMA_FROMDEVICE);
2178 pci_unmap_single(pdev, buffer_info->dma,
2179 adapter->rx_buffer_len,
2180 PCI_DMA_FROMDEVICE);
2181 buffer_info->dma = 0;
2184 if (buffer_info->skb) {
2185 dev_kfree_skb(buffer_info->skb);
2186 buffer_info->skb = NULL;
2188 if (buffer_info->page) {
2189 if (buffer_info->page_dma)
2190 pci_unmap_page(pdev, buffer_info->page_dma,
2192 PCI_DMA_FROMDEVICE);
2193 put_page(buffer_info->page);
2194 buffer_info->page = NULL;
2195 buffer_info->page_dma = 0;
2196 buffer_info->page_offset = 0;
2200 size = sizeof(struct igb_buffer) * rx_ring->count;
2201 memset(rx_ring->buffer_info, 0, size);
2203 /* Zero out the descriptor ring */
2204 memset(rx_ring->desc, 0, rx_ring->size);
2206 rx_ring->next_to_clean = 0;
2207 rx_ring->next_to_use = 0;
2209 writel(0, adapter->hw.hw_addr + rx_ring->head);
2210 writel(0, adapter->hw.hw_addr + rx_ring->tail);
2214 * igb_clean_all_rx_rings - Free Rx Buffers for all queues
2215 * @adapter: board private structure
2217 static void igb_clean_all_rx_rings(struct igb_adapter *adapter)
2221 for (i = 0; i < adapter->num_rx_queues; i++)
2222 igb_clean_rx_ring(&adapter->rx_ring[i]);
2226 * igb_set_mac - Change the Ethernet Address of the NIC
2227 * @netdev: network interface device structure
2228 * @p: pointer to an address structure
2230 * Returns 0 on success, negative on failure
2232 static int igb_set_mac(struct net_device *netdev, void *p)
2234 struct igb_adapter *adapter = netdev_priv(netdev);
2235 struct sockaddr *addr = p;
2237 if (!is_valid_ether_addr(addr->sa_data))
2238 return -EADDRNOTAVAIL;
2240 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2241 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
2243 adapter->hw.mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
2249 * igb_set_multi - Multicast and Promiscuous mode set
2250 * @netdev: network interface device structure
2252 * The set_multi entry point is called whenever the multicast address
2253 * list or the network interface flags are updated. This routine is
2254 * responsible for configuring the hardware for proper multicast,
2255 * promiscuous mode, and all-multi behavior.
2257 static void igb_set_multi(struct net_device *netdev)
2259 struct igb_adapter *adapter = netdev_priv(netdev);
2260 struct e1000_hw *hw = &adapter->hw;
2261 struct e1000_mac_info *mac = &hw->mac;
2262 struct dev_mc_list *mc_ptr;
2267 /* Check for Promiscuous and All Multicast modes */
2269 rctl = rd32(E1000_RCTL);
2271 if (netdev->flags & IFF_PROMISC)
2272 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
2273 else if (netdev->flags & IFF_ALLMULTI) {
2274 rctl |= E1000_RCTL_MPE;
2275 rctl &= ~E1000_RCTL_UPE;
2277 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
2279 wr32(E1000_RCTL, rctl);
2281 if (!netdev->mc_count) {
2282 /* nothing to program, so clear mc list */
2283 igb_update_mc_addr_list_82575(hw, NULL, 0, 1,
2284 mac->rar_entry_count);
2288 mta_list = kzalloc(netdev->mc_count * 6, GFP_ATOMIC);
2292 /* The shared function expects a packed array of only addresses. */
2293 mc_ptr = netdev->mc_list;
2295 for (i = 0; i < netdev->mc_count; i++) {
2298 memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, ETH_ALEN);
2299 mc_ptr = mc_ptr->next;
2301 igb_update_mc_addr_list_82575(hw, mta_list, i, 1,
2302 mac->rar_entry_count);
2306 /* Need to wait a few seconds after link up to get diagnostic information from
2308 static void igb_update_phy_info(unsigned long data)
2310 struct igb_adapter *adapter = (struct igb_adapter *) data;
2311 if (adapter->hw.phy.ops.get_phy_info)
2312 adapter->hw.phy.ops.get_phy_info(&adapter->hw);
2316 * igb_watchdog - Timer Call-back
2317 * @data: pointer to adapter cast into an unsigned long
2319 static void igb_watchdog(unsigned long data)
2321 struct igb_adapter *adapter = (struct igb_adapter *)data;
2322 /* Do the rest outside of interrupt context */
2323 schedule_work(&adapter->watchdog_task);
2326 static void igb_watchdog_task(struct work_struct *work)
2328 struct igb_adapter *adapter = container_of(work,
2329 struct igb_adapter, watchdog_task);
2330 struct e1000_hw *hw = &adapter->hw;
2332 struct net_device *netdev = adapter->netdev;
2333 struct igb_ring *tx_ring = adapter->tx_ring;
2334 struct e1000_mac_info *mac = &adapter->hw.mac;
2337 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
2341 if ((netif_carrier_ok(netdev)) &&
2342 (rd32(E1000_STATUS) & E1000_STATUS_LU))
2345 ret_val = hw->mac.ops.check_for_link(&adapter->hw);
2346 if ((ret_val == E1000_ERR_PHY) &&
2347 (hw->phy.type == e1000_phy_igp_3) &&
2349 E1000_PHY_CTRL_GBE_DISABLE))
2350 dev_info(&adapter->pdev->dev,
2351 "Gigabit has been disabled, downgrading speed\n");
2353 if ((hw->phy.media_type == e1000_media_type_internal_serdes) &&
2354 !(rd32(E1000_TXCW) & E1000_TXCW_ANE))
2355 link = mac->serdes_has_link;
2357 link = rd32(E1000_STATUS) &
2361 if (!netif_carrier_ok(netdev)) {
2363 hw->mac.ops.get_speed_and_duplex(&adapter->hw,
2364 &adapter->link_speed,
2365 &adapter->link_duplex);
2367 ctrl = rd32(E1000_CTRL);
2368 dev_info(&adapter->pdev->dev,
2369 "NIC Link is Up %d Mbps %s, "
2370 "Flow Control: %s\n",
2371 adapter->link_speed,
2372 adapter->link_duplex == FULL_DUPLEX ?
2373 "Full Duplex" : "Half Duplex",
2374 ((ctrl & E1000_CTRL_TFCE) && (ctrl &
2375 E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl &
2376 E1000_CTRL_RFCE) ? "RX" : ((ctrl &
2377 E1000_CTRL_TFCE) ? "TX" : "None")));
2379 /* tweak tx_queue_len according to speed/duplex and
2380 * adjust the timeout factor */
2381 netdev->tx_queue_len = adapter->tx_queue_len;
2382 adapter->tx_timeout_factor = 1;
2383 switch (adapter->link_speed) {
2385 netdev->tx_queue_len = 10;
2386 adapter->tx_timeout_factor = 14;
2389 netdev->tx_queue_len = 100;
2390 /* maybe add some timeout factor ? */
2394 netif_carrier_on(netdev);
2395 netif_wake_queue(netdev);
2396 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
2397 for (i = 0; i < adapter->num_tx_queues; i++)
2398 netif_wake_subqueue(netdev, i);
2401 if (!test_bit(__IGB_DOWN, &adapter->state))
2402 mod_timer(&adapter->phy_info_timer,
2403 round_jiffies(jiffies + 2 * HZ));
2406 if (netif_carrier_ok(netdev)) {
2407 adapter->link_speed = 0;
2408 adapter->link_duplex = 0;
2409 dev_info(&adapter->pdev->dev, "NIC Link is Down\n");
2410 netif_carrier_off(netdev);
2411 netif_stop_queue(netdev);
2412 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
2413 for (i = 0; i < adapter->num_tx_queues; i++)
2414 netif_stop_subqueue(netdev, i);
2416 if (!test_bit(__IGB_DOWN, &adapter->state))
2417 mod_timer(&adapter->phy_info_timer,
2418 round_jiffies(jiffies + 2 * HZ));
2423 igb_update_stats(adapter);
2425 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
2426 adapter->tpt_old = adapter->stats.tpt;
2427 mac->collision_delta = adapter->stats.colc - adapter->colc_old;
2428 adapter->colc_old = adapter->stats.colc;
2430 adapter->gorc = adapter->stats.gorc - adapter->gorc_old;
2431 adapter->gorc_old = adapter->stats.gorc;
2432 adapter->gotc = adapter->stats.gotc - adapter->gotc_old;
2433 adapter->gotc_old = adapter->stats.gotc;
2435 igb_update_adaptive(&adapter->hw);
2437 if (!netif_carrier_ok(netdev)) {
2438 if (IGB_DESC_UNUSED(tx_ring) + 1 < tx_ring->count) {
2439 /* We've lost link, so the controller stops DMA,
2440 * but we've got queued Tx work that's never going
2441 * to get done, so reset controller to flush Tx.
2442 * (Do the reset outside of interrupt context). */
2443 adapter->tx_timeout_count++;
2444 schedule_work(&adapter->reset_task);
2448 /* Cause software interrupt to ensure rx ring is cleaned */
2449 wr32(E1000_ICS, E1000_ICS_RXDMT0);
2451 /* Force detection of hung controller every watchdog period */
2452 tx_ring->detect_tx_hung = true;
2454 /* Reset the timer */
2455 if (!test_bit(__IGB_DOWN, &adapter->state))
2456 mod_timer(&adapter->watchdog_timer,
2457 round_jiffies(jiffies + 2 * HZ));
2460 enum latency_range {
2464 latency_invalid = 255
2469 * igb_update_ring_itr - update the dynamic ITR value based on packet size
2471 * Stores a new ITR value based on strictly on packet size. This
2472 * algorithm is less sophisticated than that used in igb_update_itr,
2473 * due to the difficulty of synchronizing statistics across multiple
2474 * receive rings. The divisors and thresholds used by this fuction
2475 * were determined based on theoretical maximum wire speed and testing
2476 * data, in order to minimize response time while increasing bulk
2478 * This functionality is controlled by the InterruptThrottleRate module
2479 * parameter (see igb_param.c)
2480 * NOTE: This function is called only when operating in a multiqueue
2481 * receive environment.
2482 * @rx_ring: pointer to ring
2484 static void igb_update_ring_itr(struct igb_ring *rx_ring)
2486 int new_val = rx_ring->itr_val;
2487 int avg_wire_size = 0;
2488 struct igb_adapter *adapter = rx_ring->adapter;
2490 if (!rx_ring->total_packets)
2491 goto clear_counts; /* no packets, so don't do anything */
2493 /* For non-gigabit speeds, just fix the interrupt rate at 4000
2494 * ints/sec - ITR timer value of 120 ticks.
2496 if (adapter->link_speed != SPEED_1000) {
2500 avg_wire_size = rx_ring->total_bytes / rx_ring->total_packets;
2502 /* Add 24 bytes to size to account for CRC, preamble, and gap */
2503 avg_wire_size += 24;
2505 /* Don't starve jumbo frames */
2506 avg_wire_size = min(avg_wire_size, 3000);
2508 /* Give a little boost to mid-size frames */
2509 if ((avg_wire_size > 300) && (avg_wire_size < 1200))
2510 new_val = avg_wire_size / 3;
2512 new_val = avg_wire_size / 2;
2515 if (new_val != rx_ring->itr_val) {
2516 rx_ring->itr_val = new_val;
2517 rx_ring->set_itr = 1;
2520 rx_ring->total_bytes = 0;
2521 rx_ring->total_packets = 0;
2525 * igb_update_itr - update the dynamic ITR value based on statistics
2526 * Stores a new ITR value based on packets and byte
2527 * counts during the last interrupt. The advantage of per interrupt
2528 * computation is faster updates and more accurate ITR for the current
2529 * traffic pattern. Constants in this function were computed
2530 * based on theoretical maximum wire speed and thresholds were set based
2531 * on testing data as well as attempting to minimize response time
2532 * while increasing bulk throughput.
2533 * this functionality is controlled by the InterruptThrottleRate module
2534 * parameter (see igb_param.c)
2535 * NOTE: These calculations are only valid when operating in a single-
2536 * queue environment.
2537 * @adapter: pointer to adapter
2538 * @itr_setting: current adapter->itr
2539 * @packets: the number of packets during this measurement interval
2540 * @bytes: the number of bytes during this measurement interval
2542 static unsigned int igb_update_itr(struct igb_adapter *adapter, u16 itr_setting,
2543 int packets, int bytes)
2545 unsigned int retval = itr_setting;
2548 goto update_itr_done;
2550 switch (itr_setting) {
2551 case lowest_latency:
2552 /* handle TSO and jumbo frames */
2553 if (bytes/packets > 8000)
2554 retval = bulk_latency;
2555 else if ((packets < 5) && (bytes > 512))
2556 retval = low_latency;
2558 case low_latency: /* 50 usec aka 20000 ints/s */
2559 if (bytes > 10000) {
2560 /* this if handles the TSO accounting */
2561 if (bytes/packets > 8000) {
2562 retval = bulk_latency;
2563 } else if ((packets < 10) || ((bytes/packets) > 1200)) {
2564 retval = bulk_latency;
2565 } else if ((packets > 35)) {
2566 retval = lowest_latency;
2568 } else if (bytes/packets > 2000) {
2569 retval = bulk_latency;
2570 } else if (packets <= 2 && bytes < 512) {
2571 retval = lowest_latency;
2574 case bulk_latency: /* 250 usec aka 4000 ints/s */
2575 if (bytes > 25000) {
2577 retval = low_latency;
2578 } else if (bytes < 6000) {
2579 retval = low_latency;
2588 static void igb_set_itr(struct igb_adapter *adapter)
2591 u32 new_itr = adapter->itr;
2593 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2594 if (adapter->link_speed != SPEED_1000) {
2600 adapter->rx_itr = igb_update_itr(adapter,
2602 adapter->rx_ring->total_packets,
2603 adapter->rx_ring->total_bytes);
2605 if (adapter->rx_ring->buddy) {
2606 adapter->tx_itr = igb_update_itr(adapter,
2608 adapter->tx_ring->total_packets,
2609 adapter->tx_ring->total_bytes);
2611 current_itr = max(adapter->rx_itr, adapter->tx_itr);
2613 current_itr = adapter->rx_itr;
2616 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2617 if (adapter->itr_setting == 3 &&
2618 current_itr == lowest_latency)
2619 current_itr = low_latency;
2621 switch (current_itr) {
2622 /* counts and packets in update_itr are dependent on these numbers */
2623 case lowest_latency:
2627 new_itr = 20000; /* aka hwitr = ~200 */
2637 adapter->rx_ring->total_bytes = 0;
2638 adapter->rx_ring->total_packets = 0;
2639 if (adapter->rx_ring->buddy) {
2640 adapter->rx_ring->buddy->total_bytes = 0;
2641 adapter->rx_ring->buddy->total_packets = 0;
2644 if (new_itr != adapter->itr) {
2645 /* this attempts to bias the interrupt rate towards Bulk
2646 * by adding intermediate steps when interrupt rate is
2648 new_itr = new_itr > adapter->itr ?
2649 min(adapter->itr + (new_itr >> 2), new_itr) :
2651 /* Don't write the value here; it resets the adapter's
2652 * internal timer, and causes us to delay far longer than
2653 * we should between interrupts. Instead, we write the ITR
2654 * value at the beginning of the next interrupt so the timing
2655 * ends up being correct.
2657 adapter->itr = new_itr;
2658 adapter->rx_ring->itr_val = 1000000000 / (new_itr * 256);
2659 adapter->rx_ring->set_itr = 1;
2666 #define IGB_TX_FLAGS_CSUM 0x00000001
2667 #define IGB_TX_FLAGS_VLAN 0x00000002
2668 #define IGB_TX_FLAGS_TSO 0x00000004
2669 #define IGB_TX_FLAGS_IPV4 0x00000008
2670 #define IGB_TX_FLAGS_VLAN_MASK 0xffff0000
2671 #define IGB_TX_FLAGS_VLAN_SHIFT 16
2673 static inline int igb_tso_adv(struct igb_adapter *adapter,
2674 struct igb_ring *tx_ring,
2675 struct sk_buff *skb, u32 tx_flags, u8 *hdr_len)
2677 struct e1000_adv_tx_context_desc *context_desc;
2680 struct igb_buffer *buffer_info;
2681 u32 info = 0, tu_cmd = 0;
2682 u32 mss_l4len_idx, l4len;
2685 if (skb_header_cloned(skb)) {
2686 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2691 l4len = tcp_hdrlen(skb);
2694 if (skb->protocol == htons(ETH_P_IP)) {
2695 struct iphdr *iph = ip_hdr(skb);
2698 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2702 } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) {
2703 ipv6_hdr(skb)->payload_len = 0;
2704 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
2705 &ipv6_hdr(skb)->daddr,
2709 i = tx_ring->next_to_use;
2711 buffer_info = &tx_ring->buffer_info[i];
2712 context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i);
2713 /* VLAN MACLEN IPLEN */
2714 if (tx_flags & IGB_TX_FLAGS_VLAN)
2715 info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK);
2716 info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT);
2717 *hdr_len += skb_network_offset(skb);
2718 info |= skb_network_header_len(skb);
2719 *hdr_len += skb_network_header_len(skb);
2720 context_desc->vlan_macip_lens = cpu_to_le32(info);
2722 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
2723 tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT);
2725 if (skb->protocol == htons(ETH_P_IP))
2726 tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
2727 tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
2729 context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd);
2732 mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT);
2733 mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT);
2735 /* Context index must be unique per ring. */
2736 if (adapter->flags & IGB_FLAG_NEED_CTX_IDX)
2737 mss_l4len_idx |= tx_ring->queue_index << 4;
2739 context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
2740 context_desc->seqnum_seed = 0;
2742 buffer_info->time_stamp = jiffies;
2743 buffer_info->dma = 0;
2745 if (i == tx_ring->count)
2748 tx_ring->next_to_use = i;
2753 static inline bool igb_tx_csum_adv(struct igb_adapter *adapter,
2754 struct igb_ring *tx_ring,
2755 struct sk_buff *skb, u32 tx_flags)
2757 struct e1000_adv_tx_context_desc *context_desc;
2759 struct igb_buffer *buffer_info;
2760 u32 info = 0, tu_cmd = 0;
2762 if ((skb->ip_summed == CHECKSUM_PARTIAL) ||
2763 (tx_flags & IGB_TX_FLAGS_VLAN)) {
2764 i = tx_ring->next_to_use;
2765 buffer_info = &tx_ring->buffer_info[i];
2766 context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i);
2768 if (tx_flags & IGB_TX_FLAGS_VLAN)
2769 info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK);
2770 info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT);
2771 if (skb->ip_summed == CHECKSUM_PARTIAL)
2772 info |= skb_network_header_len(skb);
2774 context_desc->vlan_macip_lens = cpu_to_le32(info);
2776 tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT);
2778 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2779 switch (skb->protocol) {
2780 case __constant_htons(ETH_P_IP):
2781 tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
2782 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
2783 tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
2785 case __constant_htons(ETH_P_IPV6):
2786 /* XXX what about other V6 headers?? */
2787 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
2788 tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
2791 if (unlikely(net_ratelimit()))
2792 dev_warn(&adapter->pdev->dev,
2793 "partial checksum but proto=%x!\n",
2799 context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd);
2800 context_desc->seqnum_seed = 0;
2801 if (adapter->flags & IGB_FLAG_NEED_CTX_IDX)
2802 context_desc->mss_l4len_idx =
2803 cpu_to_le32(tx_ring->queue_index << 4);
2805 buffer_info->time_stamp = jiffies;
2806 buffer_info->dma = 0;
2809 if (i == tx_ring->count)
2811 tx_ring->next_to_use = i;
2820 #define IGB_MAX_TXD_PWR 16
2821 #define IGB_MAX_DATA_PER_TXD (1<<IGB_MAX_TXD_PWR)
2823 static inline int igb_tx_map_adv(struct igb_adapter *adapter,
2824 struct igb_ring *tx_ring,
2825 struct sk_buff *skb)
2827 struct igb_buffer *buffer_info;
2828 unsigned int len = skb_headlen(skb);
2829 unsigned int count = 0, i;
2832 i = tx_ring->next_to_use;
2834 buffer_info = &tx_ring->buffer_info[i];
2835 BUG_ON(len >= IGB_MAX_DATA_PER_TXD);
2836 buffer_info->length = len;
2837 /* set time_stamp *before* dma to help avoid a possible race */
2838 buffer_info->time_stamp = jiffies;
2839 buffer_info->dma = pci_map_single(adapter->pdev, skb->data, len,
2843 if (i == tx_ring->count)
2846 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) {
2847 struct skb_frag_struct *frag;
2849 frag = &skb_shinfo(skb)->frags[f];
2852 buffer_info = &tx_ring->buffer_info[i];
2853 BUG_ON(len >= IGB_MAX_DATA_PER_TXD);
2854 buffer_info->length = len;
2855 buffer_info->time_stamp = jiffies;
2856 buffer_info->dma = pci_map_page(adapter->pdev,
2864 if (i == tx_ring->count)
2868 i = (i == 0) ? tx_ring->count - 1 : i - 1;
2869 tx_ring->buffer_info[i].skb = skb;
2874 static inline void igb_tx_queue_adv(struct igb_adapter *adapter,
2875 struct igb_ring *tx_ring,
2876 int tx_flags, int count, u32 paylen,
2879 union e1000_adv_tx_desc *tx_desc = NULL;
2880 struct igb_buffer *buffer_info;
2881 u32 olinfo_status = 0, cmd_type_len;
2884 cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS |
2885 E1000_ADVTXD_DCMD_DEXT);
2887 if (tx_flags & IGB_TX_FLAGS_VLAN)
2888 cmd_type_len |= E1000_ADVTXD_DCMD_VLE;
2890 if (tx_flags & IGB_TX_FLAGS_TSO) {
2891 cmd_type_len |= E1000_ADVTXD_DCMD_TSE;
2893 /* insert tcp checksum */
2894 olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
2896 /* insert ip checksum */
2897 if (tx_flags & IGB_TX_FLAGS_IPV4)
2898 olinfo_status |= E1000_TXD_POPTS_IXSM << 8;
2900 } else if (tx_flags & IGB_TX_FLAGS_CSUM) {
2901 olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
2904 if ((adapter->flags & IGB_FLAG_NEED_CTX_IDX) &&
2905 (tx_flags & (IGB_TX_FLAGS_CSUM | IGB_TX_FLAGS_TSO |
2906 IGB_TX_FLAGS_VLAN)))
2907 olinfo_status |= tx_ring->queue_index << 4;
2909 olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT);
2911 i = tx_ring->next_to_use;
2913 buffer_info = &tx_ring->buffer_info[i];
2914 tx_desc = E1000_TX_DESC_ADV(*tx_ring, i);
2915 tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
2916 tx_desc->read.cmd_type_len =
2917 cpu_to_le32(cmd_type_len | buffer_info->length);
2918 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
2920 if (i == tx_ring->count)
2924 tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd);
2925 /* Force memory writes to complete before letting h/w
2926 * know there are new descriptors to fetch. (Only
2927 * applicable for weak-ordered memory model archs,
2928 * such as IA-64). */
2931 tx_ring->next_to_use = i;
2932 writel(i, adapter->hw.hw_addr + tx_ring->tail);
2933 /* we need this if more than one processor can write to our tail
2934 * at a time, it syncronizes IO on IA64/Altix systems */
2938 static int __igb_maybe_stop_tx(struct net_device *netdev,
2939 struct igb_ring *tx_ring, int size)
2941 struct igb_adapter *adapter = netdev_priv(netdev);
2943 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
2944 netif_stop_subqueue(netdev, tx_ring->queue_index);
2946 netif_stop_queue(netdev);
2949 /* Herbert's original patch had:
2950 * smp_mb__after_netif_stop_queue();
2951 * but since that doesn't exist yet, just open code it. */
2954 /* We need to check again in a case another CPU has just
2955 * made room available. */
2956 if (IGB_DESC_UNUSED(tx_ring) < size)
2960 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
2961 netif_wake_subqueue(netdev, tx_ring->queue_index);
2963 netif_wake_queue(netdev);
2965 ++adapter->restart_queue;
2969 static int igb_maybe_stop_tx(struct net_device *netdev,
2970 struct igb_ring *tx_ring, int size)
2972 if (IGB_DESC_UNUSED(tx_ring) >= size)
2974 return __igb_maybe_stop_tx(netdev, tx_ring, size);
2977 #define TXD_USE_COUNT(S) (((S) >> (IGB_MAX_TXD_PWR)) + 1)
2979 static int igb_xmit_frame_ring_adv(struct sk_buff *skb,
2980 struct net_device *netdev,
2981 struct igb_ring *tx_ring)
2983 struct igb_adapter *adapter = netdev_priv(netdev);
2984 unsigned int tx_flags = 0;
2989 len = skb_headlen(skb);
2991 if (test_bit(__IGB_DOWN, &adapter->state)) {
2992 dev_kfree_skb_any(skb);
2993 return NETDEV_TX_OK;
2996 if (skb->len <= 0) {
2997 dev_kfree_skb_any(skb);
2998 return NETDEV_TX_OK;
3001 /* need: 1 descriptor per page,
3002 * + 2 desc gap to keep tail from touching head,
3003 * + 1 desc for skb->data,
3004 * + 1 desc for context descriptor,
3005 * otherwise try next time */
3006 if (igb_maybe_stop_tx(netdev, tx_ring, skb_shinfo(skb)->nr_frags + 4)) {
3007 /* this is a hard error */
3008 return NETDEV_TX_BUSY;
3012 if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
3013 tx_flags |= IGB_TX_FLAGS_VLAN;
3014 tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT);
3017 if (skb->protocol == htons(ETH_P_IP))
3018 tx_flags |= IGB_TX_FLAGS_IPV4;
3020 tso = skb_is_gso(skb) ? igb_tso_adv(adapter, tx_ring, skb, tx_flags,
3024 dev_kfree_skb_any(skb);
3025 return NETDEV_TX_OK;
3029 tx_flags |= IGB_TX_FLAGS_TSO;
3030 else if (igb_tx_csum_adv(adapter, tx_ring, skb, tx_flags))
3031 if (skb->ip_summed == CHECKSUM_PARTIAL)
3032 tx_flags |= IGB_TX_FLAGS_CSUM;
3034 igb_tx_queue_adv(adapter, tx_ring, tx_flags,
3035 igb_tx_map_adv(adapter, tx_ring, skb),
3038 netdev->trans_start = jiffies;
3040 /* Make sure there is space in the ring for the next send. */
3041 igb_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 4);
3043 return NETDEV_TX_OK;
3046 static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *netdev)
3048 struct igb_adapter *adapter = netdev_priv(netdev);
3049 struct igb_ring *tx_ring;
3051 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
3053 r_idx = skb->queue_mapping & (IGB_MAX_TX_QUEUES - 1);
3054 tx_ring = adapter->multi_tx_table[r_idx];
3056 tx_ring = &adapter->tx_ring[0];
3060 /* This goes back to the question of how to logically map a tx queue
3061 * to a flow. Right now, performance is impacted slightly negatively
3062 * if using multiple tx queues. If the stack breaks away from a
3063 * single qdisc implementation, we can look at this again. */
3064 return (igb_xmit_frame_ring_adv(skb, netdev, tx_ring));
3068 * igb_tx_timeout - Respond to a Tx Hang
3069 * @netdev: network interface device structure
3071 static void igb_tx_timeout(struct net_device *netdev)
3073 struct igb_adapter *adapter = netdev_priv(netdev);
3074 struct e1000_hw *hw = &adapter->hw;
3076 /* Do the reset outside of interrupt context */
3077 adapter->tx_timeout_count++;
3078 schedule_work(&adapter->reset_task);
3079 wr32(E1000_EICS, adapter->eims_enable_mask &
3080 ~(E1000_EIMS_TCP_TIMER | E1000_EIMS_OTHER));
3083 static void igb_reset_task(struct work_struct *work)
3085 struct igb_adapter *adapter;
3086 adapter = container_of(work, struct igb_adapter, reset_task);
3088 igb_reinit_locked(adapter);
3092 * igb_get_stats - Get System Network Statistics
3093 * @netdev: network interface device structure
3095 * Returns the address of the device statistics structure.
3096 * The statistics are actually updated from the timer callback.
3098 static struct net_device_stats *
3099 igb_get_stats(struct net_device *netdev)
3101 struct igb_adapter *adapter = netdev_priv(netdev);
3103 /* only return the current stats */
3104 return &adapter->net_stats;
3108 * igb_change_mtu - Change the Maximum Transfer Unit
3109 * @netdev: network interface device structure
3110 * @new_mtu: new value for maximum frame size
3112 * Returns 0 on success, negative on failure
3114 static int igb_change_mtu(struct net_device *netdev, int new_mtu)
3116 struct igb_adapter *adapter = netdev_priv(netdev);
3117 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
3119 if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) ||
3120 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
3121 dev_err(&adapter->pdev->dev, "Invalid MTU setting\n");
3125 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3126 if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
3127 dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n");
3131 while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
3133 /* igb_down has a dependency on max_frame_size */
3134 adapter->max_frame_size = max_frame;
3135 if (netif_running(netdev))
3138 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3139 * means we reserve 2 more, this pushes us to allocate from the next
3141 * i.e. RXBUFFER_2048 --> size-4096 slab
3144 if (max_frame <= IGB_RXBUFFER_256)
3145 adapter->rx_buffer_len = IGB_RXBUFFER_256;
3146 else if (max_frame <= IGB_RXBUFFER_512)
3147 adapter->rx_buffer_len = IGB_RXBUFFER_512;
3148 else if (max_frame <= IGB_RXBUFFER_1024)
3149 adapter->rx_buffer_len = IGB_RXBUFFER_1024;
3150 else if (max_frame <= IGB_RXBUFFER_2048)
3151 adapter->rx_buffer_len = IGB_RXBUFFER_2048;
3153 #if (PAGE_SIZE / 2) > IGB_RXBUFFER_16384
3154 adapter->rx_buffer_len = IGB_RXBUFFER_16384;
3156 adapter->rx_buffer_len = PAGE_SIZE / 2;
3158 /* adjust allocation if LPE protects us, and we aren't using SBP */
3159 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
3160 (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))
3161 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
3163 dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n",
3164 netdev->mtu, new_mtu);
3165 netdev->mtu = new_mtu;
3167 if (netif_running(netdev))
3172 clear_bit(__IGB_RESETTING, &adapter->state);
3178 * igb_update_stats - Update the board statistics counters
3179 * @adapter: board private structure
3182 void igb_update_stats(struct igb_adapter *adapter)
3184 struct e1000_hw *hw = &adapter->hw;
3185 struct pci_dev *pdev = adapter->pdev;
3188 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3191 * Prevent stats update while adapter is being reset, or if the pci
3192 * connection is down.
3194 if (adapter->link_speed == 0)
3196 if (pci_channel_offline(pdev))
3199 adapter->stats.crcerrs += rd32(E1000_CRCERRS);
3200 adapter->stats.gprc += rd32(E1000_GPRC);
3201 adapter->stats.gorc += rd32(E1000_GORCL);
3202 rd32(E1000_GORCH); /* clear GORCL */
3203 adapter->stats.bprc += rd32(E1000_BPRC);
3204 adapter->stats.mprc += rd32(E1000_MPRC);
3205 adapter->stats.roc += rd32(E1000_ROC);
3207 adapter->stats.prc64 += rd32(E1000_PRC64);
3208 adapter->stats.prc127 += rd32(E1000_PRC127);
3209 adapter->stats.prc255 += rd32(E1000_PRC255);
3210 adapter->stats.prc511 += rd32(E1000_PRC511);
3211 adapter->stats.prc1023 += rd32(E1000_PRC1023);
3212 adapter->stats.prc1522 += rd32(E1000_PRC1522);
3213 adapter->stats.symerrs += rd32(E1000_SYMERRS);
3214 adapter->stats.sec += rd32(E1000_SEC);
3216 adapter->stats.mpc += rd32(E1000_MPC);
3217 adapter->stats.scc += rd32(E1000_SCC);
3218 adapter->stats.ecol += rd32(E1000_ECOL);
3219 adapter->stats.mcc += rd32(E1000_MCC);
3220 adapter->stats.latecol += rd32(E1000_LATECOL);
3221 adapter->stats.dc += rd32(E1000_DC);
3222 adapter->stats.rlec += rd32(E1000_RLEC);
3223 adapter->stats.xonrxc += rd32(E1000_XONRXC);
3224 adapter->stats.xontxc += rd32(E1000_XONTXC);
3225 adapter->stats.xoffrxc += rd32(E1000_XOFFRXC);
3226 adapter->stats.xofftxc += rd32(E1000_XOFFTXC);
3227 adapter->stats.fcruc += rd32(E1000_FCRUC);
3228 adapter->stats.gptc += rd32(E1000_GPTC);
3229 adapter->stats.gotc += rd32(E1000_GOTCL);
3230 rd32(E1000_GOTCH); /* clear GOTCL */
3231 adapter->stats.rnbc += rd32(E1000_RNBC);
3232 adapter->stats.ruc += rd32(E1000_RUC);
3233 adapter->stats.rfc += rd32(E1000_RFC);
3234 adapter->stats.rjc += rd32(E1000_RJC);
3235 adapter->stats.tor += rd32(E1000_TORH);
3236 adapter->stats.tot += rd32(E1000_TOTH);
3237 adapter->stats.tpr += rd32(E1000_TPR);
3239 adapter->stats.ptc64 += rd32(E1000_PTC64);
3240 adapter->stats.ptc127 += rd32(E1000_PTC127);
3241 adapter->stats.ptc255 += rd32(E1000_PTC255);
3242 adapter->stats.ptc511 += rd32(E1000_PTC511);
3243 adapter->stats.ptc1023 += rd32(E1000_PTC1023);
3244 adapter->stats.ptc1522 += rd32(E1000_PTC1522);
3246 adapter->stats.mptc += rd32(E1000_MPTC);
3247 adapter->stats.bptc += rd32(E1000_BPTC);
3249 /* used for adaptive IFS */
3251 hw->mac.tx_packet_delta = rd32(E1000_TPT);
3252 adapter->stats.tpt += hw->mac.tx_packet_delta;
3253 hw->mac.collision_delta = rd32(E1000_COLC);
3254 adapter->stats.colc += hw->mac.collision_delta;
3256 adapter->stats.algnerrc += rd32(E1000_ALGNERRC);
3257 adapter->stats.rxerrc += rd32(E1000_RXERRC);
3258 adapter->stats.tncrs += rd32(E1000_TNCRS);
3259 adapter->stats.tsctc += rd32(E1000_TSCTC);
3260 adapter->stats.tsctfc += rd32(E1000_TSCTFC);
3262 adapter->stats.iac += rd32(E1000_IAC);
3263 adapter->stats.icrxoc += rd32(E1000_ICRXOC);
3264 adapter->stats.icrxptc += rd32(E1000_ICRXPTC);
3265 adapter->stats.icrxatc += rd32(E1000_ICRXATC);
3266 adapter->stats.ictxptc += rd32(E1000_ICTXPTC);
3267 adapter->stats.ictxatc += rd32(E1000_ICTXATC);
3268 adapter->stats.ictxqec += rd32(E1000_ICTXQEC);
3269 adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC);
3270 adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC);
3272 /* Fill out the OS statistics structure */
3273 adapter->net_stats.multicast = adapter->stats.mprc;
3274 adapter->net_stats.collisions = adapter->stats.colc;
3278 /* RLEC on some newer hardware can be incorrect so build
3279 * our own version based on RUC and ROC */
3280 adapter->net_stats.rx_errors = adapter->stats.rxerrc +
3281 adapter->stats.crcerrs + adapter->stats.algnerrc +
3282 adapter->stats.ruc + adapter->stats.roc +
3283 adapter->stats.cexterr;
3284 adapter->net_stats.rx_length_errors = adapter->stats.ruc +
3286 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
3287 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
3288 adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
3291 adapter->net_stats.tx_errors = adapter->stats.ecol +
3292 adapter->stats.latecol;
3293 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
3294 adapter->net_stats.tx_window_errors = adapter->stats.latecol;
3295 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
3297 /* Tx Dropped needs to be maintained elsewhere */
3300 if (hw->phy.media_type == e1000_media_type_copper) {
3301 if ((adapter->link_speed == SPEED_1000) &&
3302 (!hw->phy.ops.read_phy_reg(hw, PHY_1000T_STATUS,
3304 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
3305 adapter->phy_stats.idle_errors += phy_tmp;
3309 /* Management Stats */
3310 adapter->stats.mgptc += rd32(E1000_MGTPTC);
3311 adapter->stats.mgprc += rd32(E1000_MGTPRC);
3312 adapter->stats.mgpdc += rd32(E1000_MGTPDC);
3316 static irqreturn_t igb_msix_other(int irq, void *data)
3318 struct net_device *netdev = data;
3319 struct igb_adapter *adapter = netdev_priv(netdev);
3320 struct e1000_hw *hw = &adapter->hw;
3321 u32 icr = rd32(E1000_ICR);
3323 /* reading ICR causes bit 31 of EICR to be cleared */
3324 if (!(icr & E1000_ICR_LSC))
3325 goto no_link_interrupt;
3326 hw->mac.get_link_status = 1;
3327 /* guard against interrupt when we're going down */
3328 if (!test_bit(__IGB_DOWN, &adapter->state))
3329 mod_timer(&adapter->watchdog_timer, jiffies + 1);
3332 wr32(E1000_IMS, E1000_IMS_LSC);
3333 wr32(E1000_EIMS, adapter->eims_other);
3338 static irqreturn_t igb_msix_tx(int irq, void *data)
3340 struct igb_ring *tx_ring = data;
3341 struct igb_adapter *adapter = tx_ring->adapter;
3342 struct e1000_hw *hw = &adapter->hw;
3345 if (adapter->flags & IGB_FLAG_DCA_ENABLED)
3346 igb_update_tx_dca(tx_ring);
3348 tx_ring->total_bytes = 0;
3349 tx_ring->total_packets = 0;
3351 /* auto mask will automatically reenable the interrupt when we write
3353 if (!igb_clean_tx_irq(tx_ring))
3354 /* Ring was not completely cleaned, so fire another interrupt */
3355 wr32(E1000_EICS, tx_ring->eims_value);
3357 wr32(E1000_EIMS, tx_ring->eims_value);
3362 static void igb_write_itr(struct igb_ring *ring)
3364 struct e1000_hw *hw = &ring->adapter->hw;
3365 if ((ring->adapter->itr_setting & 3) && ring->set_itr) {
3366 switch (hw->mac.type) {
3368 wr32(ring->itr_register,
3373 wr32(ring->itr_register,
3375 (ring->itr_val << 16));
3382 static irqreturn_t igb_msix_rx(int irq, void *data)
3384 struct igb_ring *rx_ring = data;
3385 struct igb_adapter *adapter = rx_ring->adapter;
3387 /* Write the ITR value calculated at the end of the
3388 * previous interrupt.
3391 igb_write_itr(rx_ring);
3393 if (netif_rx_schedule_prep(adapter->netdev, &rx_ring->napi))
3394 __netif_rx_schedule(adapter->netdev, &rx_ring->napi);
3397 if (adapter->flags & IGB_FLAG_DCA_ENABLED)
3398 igb_update_rx_dca(rx_ring);
3404 static void igb_update_rx_dca(struct igb_ring *rx_ring)
3407 struct igb_adapter *adapter = rx_ring->adapter;
3408 struct e1000_hw *hw = &adapter->hw;
3409 int cpu = get_cpu();
3410 int q = rx_ring - adapter->rx_ring;
3412 if (rx_ring->cpu != cpu) {
3413 dca_rxctrl = rd32(E1000_DCA_RXCTRL(q));
3414 if (hw->mac.type == e1000_82576) {
3415 dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK_82576;
3416 dca_rxctrl |= dca_get_tag(cpu) <<
3417 E1000_DCA_RXCTRL_CPUID_SHIFT;
3419 dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK;
3420 dca_rxctrl |= dca_get_tag(cpu);
3422 dca_rxctrl |= E1000_DCA_RXCTRL_DESC_DCA_EN;
3423 dca_rxctrl |= E1000_DCA_RXCTRL_HEAD_DCA_EN;
3424 dca_rxctrl |= E1000_DCA_RXCTRL_DATA_DCA_EN;
3425 wr32(E1000_DCA_RXCTRL(q), dca_rxctrl);
3431 static void igb_update_tx_dca(struct igb_ring *tx_ring)
3434 struct igb_adapter *adapter = tx_ring->adapter;
3435 struct e1000_hw *hw = &adapter->hw;
3436 int cpu = get_cpu();
3437 int q = tx_ring - adapter->tx_ring;
3439 if (tx_ring->cpu != cpu) {
3440 dca_txctrl = rd32(E1000_DCA_TXCTRL(q));
3441 if (hw->mac.type == e1000_82576) {
3442 dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK_82576;
3443 dca_txctrl |= dca_get_tag(cpu) <<
3444 E1000_DCA_TXCTRL_CPUID_SHIFT;
3446 dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK;
3447 dca_txctrl |= dca_get_tag(cpu);
3449 dca_txctrl |= E1000_DCA_TXCTRL_DESC_DCA_EN;
3450 wr32(E1000_DCA_TXCTRL(q), dca_txctrl);
3456 static void igb_setup_dca(struct igb_adapter *adapter)
3460 if (!(adapter->flags & IGB_FLAG_DCA_ENABLED))
3463 for (i = 0; i < adapter->num_tx_queues; i++) {
3464 adapter->tx_ring[i].cpu = -1;
3465 igb_update_tx_dca(&adapter->tx_ring[i]);
3467 for (i = 0; i < adapter->num_rx_queues; i++) {
3468 adapter->rx_ring[i].cpu = -1;
3469 igb_update_rx_dca(&adapter->rx_ring[i]);
3473 static int __igb_notify_dca(struct device *dev, void *data)
3475 struct net_device *netdev = dev_get_drvdata(dev);
3476 struct igb_adapter *adapter = netdev_priv(netdev);
3477 struct e1000_hw *hw = &adapter->hw;
3478 unsigned long event = *(unsigned long *)data;
3480 if (!(adapter->flags & IGB_FLAG_HAS_DCA))
3484 case DCA_PROVIDER_ADD:
3485 /* if already enabled, don't do it again */
3486 if (adapter->flags & IGB_FLAG_DCA_ENABLED)
3488 adapter->flags |= IGB_FLAG_DCA_ENABLED;
3489 /* Always use CB2 mode, difference is masked
3490 * in the CB driver. */
3491 wr32(E1000_DCA_CTRL, 2);
3492 if (dca_add_requester(dev) == 0) {
3493 dev_info(&adapter->pdev->dev, "DCA enabled\n");
3494 igb_setup_dca(adapter);
3497 /* Fall Through since DCA is disabled. */
3498 case DCA_PROVIDER_REMOVE:
3499 if (adapter->flags & IGB_FLAG_DCA_ENABLED) {
3500 /* without this a class_device is left
3501 * hanging around in the sysfs model */
3502 dca_remove_requester(dev);
3503 dev_info(&adapter->pdev->dev, "DCA disabled\n");
3504 adapter->flags &= ~IGB_FLAG_DCA_ENABLED;
3505 wr32(E1000_DCA_CTRL, 1);
3513 static int igb_notify_dca(struct notifier_block *nb, unsigned long event,
3518 ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event,
3521 return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
3523 #endif /* CONFIG_DCA */
3526 * igb_intr_msi - Interrupt Handler
3527 * @irq: interrupt number
3528 * @data: pointer to a network interface device structure
3530 static irqreturn_t igb_intr_msi(int irq, void *data)
3532 struct net_device *netdev = data;
3533 struct igb_adapter *adapter = netdev_priv(netdev);
3534 struct e1000_hw *hw = &adapter->hw;
3535 /* read ICR disables interrupts using IAM */
3536 u32 icr = rd32(E1000_ICR);
3538 igb_write_itr(adapter->rx_ring);
3540 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
3541 hw->mac.get_link_status = 1;
3542 if (!test_bit(__IGB_DOWN, &adapter->state))
3543 mod_timer(&adapter->watchdog_timer, jiffies + 1);
3546 netif_rx_schedule(netdev, &adapter->rx_ring[0].napi);
3552 * igb_intr - Interrupt Handler
3553 * @irq: interrupt number
3554 * @data: pointer to a network interface device structure
3556 static irqreturn_t igb_intr(int irq, void *data)
3558 struct net_device *netdev = data;
3559 struct igb_adapter *adapter = netdev_priv(netdev);
3560 struct e1000_hw *hw = &adapter->hw;
3561 /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
3562 * need for the IMC write */
3563 u32 icr = rd32(E1000_ICR);
3566 return IRQ_NONE; /* Not our interrupt */
3568 igb_write_itr(adapter->rx_ring);
3570 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
3571 * not set, then the adapter didn't send an interrupt */
3572 if (!(icr & E1000_ICR_INT_ASSERTED))
3575 eicr = rd32(E1000_EICR);
3577 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
3578 hw->mac.get_link_status = 1;
3579 /* guard against interrupt when we're going down */
3580 if (!test_bit(__IGB_DOWN, &adapter->state))
3581 mod_timer(&adapter->watchdog_timer, jiffies + 1);
3584 netif_rx_schedule(netdev, &adapter->rx_ring[0].napi);
3590 * igb_poll - NAPI Rx polling callback
3591 * @napi: napi polling structure
3592 * @budget: count of how many packets we should handle
3594 static int igb_poll(struct napi_struct *napi, int budget)
3596 struct igb_ring *rx_ring = container_of(napi, struct igb_ring, napi);
3597 struct igb_adapter *adapter = rx_ring->adapter;
3598 struct net_device *netdev = adapter->netdev;
3599 int tx_clean_complete, work_done = 0;
3601 /* this poll routine only supports one tx and one rx queue */
3603 if (adapter->flags & IGB_FLAG_DCA_ENABLED)
3604 igb_update_tx_dca(&adapter->tx_ring[0]);
3606 tx_clean_complete = igb_clean_tx_irq(&adapter->tx_ring[0]);
3609 if (adapter->flags & IGB_FLAG_DCA_ENABLED)
3610 igb_update_rx_dca(&adapter->rx_ring[0]);
3612 igb_clean_rx_irq_adv(&adapter->rx_ring[0], &work_done, budget);
3614 /* If no Tx and not enough Rx work done, exit the polling mode */
3615 if ((tx_clean_complete && (work_done < budget)) ||
3616 !netif_running(netdev)) {
3617 if (adapter->itr_setting & 3)
3618 igb_set_itr(adapter);
3619 netif_rx_complete(netdev, napi);
3620 if (!test_bit(__IGB_DOWN, &adapter->state))
3621 igb_irq_enable(adapter);
3628 static int igb_clean_rx_ring_msix(struct napi_struct *napi, int budget)
3630 struct igb_ring *rx_ring = container_of(napi, struct igb_ring, napi);
3631 struct igb_adapter *adapter = rx_ring->adapter;
3632 struct e1000_hw *hw = &adapter->hw;
3633 struct net_device *netdev = adapter->netdev;
3636 /* Keep link state information with original netdev */
3637 if (!netif_carrier_ok(netdev))
3641 if (adapter->flags & IGB_FLAG_DCA_ENABLED)
3642 igb_update_rx_dca(rx_ring);
3644 igb_clean_rx_irq_adv(rx_ring, &work_done, budget);
3647 /* If not enough Rx work done, exit the polling mode */
3648 if ((work_done == 0) || !netif_running(netdev)) {
3650 netif_rx_complete(netdev, napi);
3652 if (adapter->itr_setting & 3) {
3653 if (adapter->num_rx_queues == 1)
3654 igb_set_itr(adapter);
3656 igb_update_ring_itr(rx_ring);
3659 if (!test_bit(__IGB_DOWN, &adapter->state))
3660 wr32(E1000_EIMS, rx_ring->eims_value);
3668 static inline u32 get_head(struct igb_ring *tx_ring)
3670 void *end = (struct e1000_tx_desc *)tx_ring->desc + tx_ring->count;
3671 return le32_to_cpu(*(volatile __le32 *)end);
3675 * igb_clean_tx_irq - Reclaim resources after transmit completes
3676 * @adapter: board private structure
3677 * returns true if ring is completely cleaned
3679 static bool igb_clean_tx_irq(struct igb_ring *tx_ring)
3681 struct igb_adapter *adapter = tx_ring->adapter;
3682 struct e1000_hw *hw = &adapter->hw;
3683 struct net_device *netdev = adapter->netdev;
3684 struct e1000_tx_desc *tx_desc;
3685 struct igb_buffer *buffer_info;
3686 struct sk_buff *skb;
3689 unsigned int count = 0;
3690 bool cleaned = false;
3692 unsigned int total_bytes = 0, total_packets = 0;
3695 head = get_head(tx_ring);
3696 i = tx_ring->next_to_clean;
3700 tx_desc = E1000_TX_DESC(*tx_ring, i);
3701 buffer_info = &tx_ring->buffer_info[i];
3702 skb = buffer_info->skb;
3705 unsigned int segs, bytecount;
3706 /* gso_segs is currently only valid for tcp */
3707 segs = skb_shinfo(skb)->gso_segs ?: 1;
3708 /* multiply data chunks by size of headers */
3709 bytecount = ((segs - 1) * skb_headlen(skb)) +
3711 total_packets += segs;
3712 total_bytes += bytecount;
3715 igb_unmap_and_free_tx_resource(adapter, buffer_info);
3716 tx_desc->upper.data = 0;
3719 if (i == tx_ring->count)
3723 if (count == IGB_MAX_TX_CLEAN) {
3730 head = get_head(tx_ring);
3731 if (head == oldhead)
3736 tx_ring->next_to_clean = i;
3738 if (unlikely(cleaned &&
3739 netif_carrier_ok(netdev) &&
3740 IGB_DESC_UNUSED(tx_ring) >= IGB_TX_QUEUE_WAKE)) {
3741 /* Make sure that anybody stopping the queue after this
3742 * sees the new next_to_clean.
3745 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
3746 if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) &&
3747 !(test_bit(__IGB_DOWN, &adapter->state))) {
3748 netif_wake_subqueue(netdev, tx_ring->queue_index);
3749 ++adapter->restart_queue;
3752 if (netif_queue_stopped(netdev) &&
3753 !(test_bit(__IGB_DOWN, &adapter->state))) {
3754 netif_wake_queue(netdev);
3755 ++adapter->restart_queue;
3760 if (tx_ring->detect_tx_hung) {
3761 /* Detect a transmit hang in hardware, this serializes the
3762 * check with the clearing of time_stamp and movement of i */
3763 tx_ring->detect_tx_hung = false;
3764 if (tx_ring->buffer_info[i].time_stamp &&
3765 time_after(jiffies, tx_ring->buffer_info[i].time_stamp +
3766 (adapter->tx_timeout_factor * HZ))
3767 && !(rd32(E1000_STATUS) &
3768 E1000_STATUS_TXOFF)) {
3770 tx_desc = E1000_TX_DESC(*tx_ring, i);
3771 /* detected Tx unit hang */
3772 dev_err(&adapter->pdev->dev,
3773 "Detected Tx Unit Hang\n"
3777 " next_to_use <%x>\n"
3778 " next_to_clean <%x>\n"
3780 "buffer_info[next_to_clean]\n"
3781 " time_stamp <%lx>\n"
3783 " desc.status <%x>\n",
3784 tx_ring->queue_index,
3785 readl(adapter->hw.hw_addr + tx_ring->head),
3786 readl(adapter->hw.hw_addr + tx_ring->tail),
3787 tx_ring->next_to_use,
3788 tx_ring->next_to_clean,
3790 tx_ring->buffer_info[i].time_stamp,
3792 tx_desc->upper.fields.status);
3793 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
3794 netif_stop_subqueue(netdev, tx_ring->queue_index);
3796 netif_stop_queue(netdev);
3800 tx_ring->total_bytes += total_bytes;
3801 tx_ring->total_packets += total_packets;
3802 tx_ring->tx_stats.bytes += total_bytes;
3803 tx_ring->tx_stats.packets += total_packets;
3804 adapter->net_stats.tx_bytes += total_bytes;
3805 adapter->net_stats.tx_packets += total_packets;
3809 #ifdef CONFIG_IGB_LRO
3811 * igb_get_skb_hdr - helper function for LRO header processing
3812 * @skb: pointer to sk_buff to be added to LRO packet
3813 * @iphdr: pointer to ip header structure
3814 * @tcph: pointer to tcp header structure
3815 * @hdr_flags: pointer to header flags
3816 * @priv: pointer to the receive descriptor for the current sk_buff
3818 static int igb_get_skb_hdr(struct sk_buff *skb, void **iphdr, void **tcph,
3819 u64 *hdr_flags, void *priv)
3821 union e1000_adv_rx_desc *rx_desc = priv;
3822 u16 pkt_type = rx_desc->wb.lower.lo_dword.pkt_info &
3823 (E1000_RXDADV_PKTTYPE_IPV4 | E1000_RXDADV_PKTTYPE_TCP);
3825 /* Verify that this is a valid IPv4 TCP packet */
3826 if (pkt_type != (E1000_RXDADV_PKTTYPE_IPV4 |
3827 E1000_RXDADV_PKTTYPE_TCP))
3830 /* Set network headers */
3831 skb_reset_network_header(skb);
3832 skb_set_transport_header(skb, ip_hdrlen(skb));
3833 *iphdr = ip_hdr(skb);
3834 *tcph = tcp_hdr(skb);
3835 *hdr_flags = LRO_IPV4 | LRO_TCP;
3840 #endif /* CONFIG_IGB_LRO */
3843 * igb_receive_skb - helper function to handle rx indications
3844 * @ring: pointer to receive ring receving this packet
3845 * @status: descriptor status field as written by hardware
3846 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
3847 * @skb: pointer to sk_buff to be indicated to stack
3849 static void igb_receive_skb(struct igb_ring *ring, u8 status,
3850 union e1000_adv_rx_desc * rx_desc,
3851 struct sk_buff *skb)
3853 struct igb_adapter * adapter = ring->adapter;
3854 bool vlan_extracted = (adapter->vlgrp && (status & E1000_RXD_STAT_VP));
3856 #ifdef CONFIG_IGB_LRO
3857 if (adapter->netdev->features & NETIF_F_LRO &&
3858 skb->ip_summed == CHECKSUM_UNNECESSARY) {
3860 lro_vlan_hwaccel_receive_skb(&ring->lro_mgr, skb,
3862 le16_to_cpu(rx_desc->wb.upper.vlan),
3865 lro_receive_skb(&ring->lro_mgr,skb, rx_desc);
3870 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
3871 le16_to_cpu(rx_desc->wb.upper.vlan));
3874 netif_receive_skb(skb);
3875 #ifdef CONFIG_IGB_LRO
3881 static inline void igb_rx_checksum_adv(struct igb_adapter *adapter,
3882 u32 status_err, struct sk_buff *skb)
3884 skb->ip_summed = CHECKSUM_NONE;
3886 /* Ignore Checksum bit is set or checksum is disabled through ethtool */
3887 if ((status_err & E1000_RXD_STAT_IXSM) || !adapter->rx_csum)
3889 /* TCP/UDP checksum error bit is set */
3891 (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) {
3892 /* let the stack verify checksum errors */
3893 adapter->hw_csum_err++;
3896 /* It must be a TCP or UDP packet with a valid checksum */
3897 if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))
3898 skb->ip_summed = CHECKSUM_UNNECESSARY;
3900 adapter->hw_csum_good++;
3903 static bool igb_clean_rx_irq_adv(struct igb_ring *rx_ring,
3904 int *work_done, int budget)
3906 struct igb_adapter *adapter = rx_ring->adapter;
3907 struct net_device *netdev = adapter->netdev;
3908 struct pci_dev *pdev = adapter->pdev;
3909 union e1000_adv_rx_desc *rx_desc , *next_rxd;
3910 struct igb_buffer *buffer_info , *next_buffer;
3911 struct sk_buff *skb;
3913 u32 length, hlen, staterr;
3914 bool cleaned = false;
3915 int cleaned_count = 0;
3916 unsigned int total_bytes = 0, total_packets = 0;
3918 i = rx_ring->next_to_clean;
3919 rx_desc = E1000_RX_DESC_ADV(*rx_ring, i);
3920 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
3922 while (staterr & E1000_RXD_STAT_DD) {
3923 if (*work_done >= budget)
3926 buffer_info = &rx_ring->buffer_info[i];
3928 /* HW will not DMA in data larger than the given buffer, even
3929 * if it parses the (NFS, of course) header to be larger. In
3930 * that case, it fills the header buffer and spills the rest
3933 hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hdr_info) &
3934 E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT;
3935 if (hlen > adapter->rx_ps_hdr_size)
3936 hlen = adapter->rx_ps_hdr_size;
3938 length = le16_to_cpu(rx_desc->wb.upper.length);
3942 skb = buffer_info->skb;
3943 prefetch(skb->data - NET_IP_ALIGN);
3944 buffer_info->skb = NULL;
3945 if (!adapter->rx_ps_hdr_size) {
3946 pci_unmap_single(pdev, buffer_info->dma,
3947 adapter->rx_buffer_len +
3949 PCI_DMA_FROMDEVICE);
3950 skb_put(skb, length);
3954 if (!skb_shinfo(skb)->nr_frags) {
3955 pci_unmap_single(pdev, buffer_info->dma,
3956 adapter->rx_ps_hdr_size +
3958 PCI_DMA_FROMDEVICE);
3963 pci_unmap_page(pdev, buffer_info->page_dma,
3964 PAGE_SIZE / 2, PCI_DMA_FROMDEVICE);
3965 buffer_info->page_dma = 0;
3967 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags++,
3969 buffer_info->page_offset,
3972 if ((adapter->rx_buffer_len > (PAGE_SIZE / 2)) ||
3973 (page_count(buffer_info->page) != 1))
3974 buffer_info->page = NULL;
3976 get_page(buffer_info->page);
3979 skb->data_len += length;
3981 skb->truesize += length;
3985 if (i == rx_ring->count)
3987 next_rxd = E1000_RX_DESC_ADV(*rx_ring, i);
3989 next_buffer = &rx_ring->buffer_info[i];
3991 if (!(staterr & E1000_RXD_STAT_EOP)) {
3992 buffer_info->skb = xchg(&next_buffer->skb, skb);
3993 buffer_info->dma = xchg(&next_buffer->dma, 0);
3997 if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
3998 dev_kfree_skb_irq(skb);
4002 total_bytes += skb->len;
4005 igb_rx_checksum_adv(adapter, staterr, skb);
4007 skb->protocol = eth_type_trans(skb, netdev);
4009 igb_receive_skb(rx_ring, staterr, rx_desc, skb);
4011 netdev->last_rx = jiffies;
4014 rx_desc->wb.upper.status_error = 0;
4016 /* return some buffers to hardware, one at a time is too slow */
4017 if (cleaned_count >= IGB_RX_BUFFER_WRITE) {
4018 igb_alloc_rx_buffers_adv(rx_ring, cleaned_count);
4022 /* use prefetched values */
4024 buffer_info = next_buffer;
4026 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
4029 rx_ring->next_to_clean = i;
4030 cleaned_count = IGB_DESC_UNUSED(rx_ring);
4032 #ifdef CONFIG_IGB_LRO
4033 if (rx_ring->lro_used) {
4034 lro_flush_all(&rx_ring->lro_mgr);
4035 rx_ring->lro_used = 0;
4040 igb_alloc_rx_buffers_adv(rx_ring, cleaned_count);
4042 rx_ring->total_packets += total_packets;
4043 rx_ring->total_bytes += total_bytes;
4044 rx_ring->rx_stats.packets += total_packets;
4045 rx_ring->rx_stats.bytes += total_bytes;
4046 adapter->net_stats.rx_bytes += total_bytes;
4047 adapter->net_stats.rx_packets += total_packets;
4053 * igb_alloc_rx_buffers_adv - Replace used receive buffers; packet split
4054 * @adapter: address of board private structure
4056 static void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring,
4059 struct igb_adapter *adapter = rx_ring->adapter;
4060 struct net_device *netdev = adapter->netdev;
4061 struct pci_dev *pdev = adapter->pdev;
4062 union e1000_adv_rx_desc *rx_desc;
4063 struct igb_buffer *buffer_info;
4064 struct sk_buff *skb;
4067 i = rx_ring->next_to_use;
4068 buffer_info = &rx_ring->buffer_info[i];
4070 while (cleaned_count--) {
4071 rx_desc = E1000_RX_DESC_ADV(*rx_ring, i);
4073 if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) {
4074 if (!buffer_info->page) {
4075 buffer_info->page = alloc_page(GFP_ATOMIC);
4076 if (!buffer_info->page) {
4077 adapter->alloc_rx_buff_failed++;
4080 buffer_info->page_offset = 0;
4082 buffer_info->page_offset ^= PAGE_SIZE / 2;
4084 buffer_info->page_dma =
4087 buffer_info->page_offset,
4089 PCI_DMA_FROMDEVICE);
4092 if (!buffer_info->skb) {
4095 if (adapter->rx_ps_hdr_size)
4096 bufsz = adapter->rx_ps_hdr_size;
4098 bufsz = adapter->rx_buffer_len;
4099 bufsz += NET_IP_ALIGN;
4100 skb = netdev_alloc_skb(netdev, bufsz);
4103 adapter->alloc_rx_buff_failed++;
4107 /* Make buffer alignment 2 beyond a 16 byte boundary
4108 * this will result in a 16 byte aligned IP header after
4109 * the 14 byte MAC header is removed
4111 skb_reserve(skb, NET_IP_ALIGN);
4113 buffer_info->skb = skb;
4114 buffer_info->dma = pci_map_single(pdev, skb->data,
4116 PCI_DMA_FROMDEVICE);
4119 /* Refresh the desc even if buffer_addrs didn't change because
4120 * each write-back erases this info. */
4121 if (adapter->rx_ps_hdr_size) {
4122 rx_desc->read.pkt_addr =
4123 cpu_to_le64(buffer_info->page_dma);
4124 rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma);
4126 rx_desc->read.pkt_addr =
4127 cpu_to_le64(buffer_info->dma);
4128 rx_desc->read.hdr_addr = 0;
4132 if (i == rx_ring->count)
4134 buffer_info = &rx_ring->buffer_info[i];
4138 if (rx_ring->next_to_use != i) {
4139 rx_ring->next_to_use = i;
4141 i = (rx_ring->count - 1);
4145 /* Force memory writes to complete before letting h/w
4146 * know there are new descriptors to fetch. (Only
4147 * applicable for weak-ordered memory model archs,
4148 * such as IA-64). */
4150 writel(i, adapter->hw.hw_addr + rx_ring->tail);
4160 static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
4162 struct igb_adapter *adapter = netdev_priv(netdev);
4163 struct mii_ioctl_data *data = if_mii(ifr);
4165 if (adapter->hw.phy.media_type != e1000_media_type_copper)
4170 data->phy_id = adapter->hw.phy.addr;
4173 if (!capable(CAP_NET_ADMIN))
4175 if (adapter->hw.phy.ops.read_phy_reg(&adapter->hw,
4177 & 0x1F, &data->val_out))
4193 static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
4199 return igb_mii_ioctl(netdev, ifr, cmd);
4205 static void igb_vlan_rx_register(struct net_device *netdev,
4206 struct vlan_group *grp)
4208 struct igb_adapter *adapter = netdev_priv(netdev);
4209 struct e1000_hw *hw = &adapter->hw;
4212 igb_irq_disable(adapter);
4213 adapter->vlgrp = grp;
4216 /* enable VLAN tag insert/strip */
4217 ctrl = rd32(E1000_CTRL);
4218 ctrl |= E1000_CTRL_VME;
4219 wr32(E1000_CTRL, ctrl);
4221 /* enable VLAN receive filtering */
4222 rctl = rd32(E1000_RCTL);
4223 rctl |= E1000_RCTL_VFE;
4224 rctl &= ~E1000_RCTL_CFIEN;
4225 wr32(E1000_RCTL, rctl);
4226 igb_update_mng_vlan(adapter);
4228 adapter->max_frame_size + VLAN_TAG_SIZE);
4230 /* disable VLAN tag insert/strip */
4231 ctrl = rd32(E1000_CTRL);
4232 ctrl &= ~E1000_CTRL_VME;
4233 wr32(E1000_CTRL, ctrl);
4235 /* disable VLAN filtering */
4236 rctl = rd32(E1000_RCTL);
4237 rctl &= ~E1000_RCTL_VFE;
4238 wr32(E1000_RCTL, rctl);
4239 if (adapter->mng_vlan_id != (u16)IGB_MNG_VLAN_NONE) {
4240 igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
4241 adapter->mng_vlan_id = IGB_MNG_VLAN_NONE;
4244 adapter->max_frame_size);
4247 if (!test_bit(__IGB_DOWN, &adapter->state))
4248 igb_irq_enable(adapter);
4251 static void igb_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
4253 struct igb_adapter *adapter = netdev_priv(netdev);
4254 struct e1000_hw *hw = &adapter->hw;
4257 if ((adapter->hw.mng_cookie.status &
4258 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
4259 (vid == adapter->mng_vlan_id))
4261 /* add VID to filter table */
4262 index = (vid >> 5) & 0x7F;
4263 vfta = array_rd32(E1000_VFTA, index);
4264 vfta |= (1 << (vid & 0x1F));
4265 igb_write_vfta(&adapter->hw, index, vfta);
4268 static void igb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
4270 struct igb_adapter *adapter = netdev_priv(netdev);
4271 struct e1000_hw *hw = &adapter->hw;
4274 igb_irq_disable(adapter);
4275 vlan_group_set_device(adapter->vlgrp, vid, NULL);
4277 if (!test_bit(__IGB_DOWN, &adapter->state))
4278 igb_irq_enable(adapter);
4280 if ((adapter->hw.mng_cookie.status &
4281 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
4282 (vid == adapter->mng_vlan_id)) {
4283 /* release control to f/w */
4284 igb_release_hw_control(adapter);
4288 /* remove VID from filter table */
4289 index = (vid >> 5) & 0x7F;
4290 vfta = array_rd32(E1000_VFTA, index);
4291 vfta &= ~(1 << (vid & 0x1F));
4292 igb_write_vfta(&adapter->hw, index, vfta);
4295 static void igb_restore_vlan(struct igb_adapter *adapter)
4297 igb_vlan_rx_register(adapter->netdev, adapter->vlgrp);
4299 if (adapter->vlgrp) {
4301 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
4302 if (!vlan_group_get_device(adapter->vlgrp, vid))
4304 igb_vlan_rx_add_vid(adapter->netdev, vid);
4309 int igb_set_spd_dplx(struct igb_adapter *adapter, u16 spddplx)
4311 struct e1000_mac_info *mac = &adapter->hw.mac;
4315 /* Fiber NICs only allow 1000 gbps Full duplex */
4316 if ((adapter->hw.phy.media_type == e1000_media_type_fiber) &&
4317 spddplx != (SPEED_1000 + DUPLEX_FULL)) {
4318 dev_err(&adapter->pdev->dev,
4319 "Unsupported Speed/Duplex configuration\n");
4324 case SPEED_10 + DUPLEX_HALF:
4325 mac->forced_speed_duplex = ADVERTISE_10_HALF;
4327 case SPEED_10 + DUPLEX_FULL:
4328 mac->forced_speed_duplex = ADVERTISE_10_FULL;
4330 case SPEED_100 + DUPLEX_HALF:
4331 mac->forced_speed_duplex = ADVERTISE_100_HALF;
4333 case SPEED_100 + DUPLEX_FULL:
4334 mac->forced_speed_duplex = ADVERTISE_100_FULL;
4336 case SPEED_1000 + DUPLEX_FULL:
4338 adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
4340 case SPEED_1000 + DUPLEX_HALF: /* not supported */
4342 dev_err(&adapter->pdev->dev,
4343 "Unsupported Speed/Duplex configuration\n");
4350 static int igb_suspend(struct pci_dev *pdev, pm_message_t state)
4352 struct net_device *netdev = pci_get_drvdata(pdev);
4353 struct igb_adapter *adapter = netdev_priv(netdev);
4354 struct e1000_hw *hw = &adapter->hw;
4355 u32 ctrl, rctl, status;
4356 u32 wufc = adapter->wol;
4361 netif_device_detach(netdev);
4363 if (netif_running(netdev))
4366 igb_reset_interrupt_capability(adapter);
4368 igb_free_queues(adapter);
4371 retval = pci_save_state(pdev);
4376 status = rd32(E1000_STATUS);
4377 if (status & E1000_STATUS_LU)
4378 wufc &= ~E1000_WUFC_LNKC;
4381 igb_setup_rctl(adapter);
4382 igb_set_multi(netdev);
4384 /* turn on all-multi mode if wake on multicast is enabled */
4385 if (wufc & E1000_WUFC_MC) {
4386 rctl = rd32(E1000_RCTL);
4387 rctl |= E1000_RCTL_MPE;
4388 wr32(E1000_RCTL, rctl);
4391 ctrl = rd32(E1000_CTRL);
4392 /* advertise wake from D3Cold */
4393 #define E1000_CTRL_ADVD3WUC 0x00100000
4394 /* phy power management enable */
4395 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4396 ctrl |= E1000_CTRL_ADVD3WUC;
4397 wr32(E1000_CTRL, ctrl);
4399 /* Allow time for pending master requests to run */
4400 igb_disable_pcie_master(&adapter->hw);
4402 wr32(E1000_WUC, E1000_WUC_PME_EN);
4403 wr32(E1000_WUFC, wufc);
4406 wr32(E1000_WUFC, 0);
4409 /* make sure adapter isn't asleep if manageability/wol is enabled */
4410 if (wufc || adapter->en_mng_pt) {
4411 pci_enable_wake(pdev, PCI_D3hot, 1);
4412 pci_enable_wake(pdev, PCI_D3cold, 1);
4414 igb_shutdown_fiber_serdes_link_82575(hw);
4415 pci_enable_wake(pdev, PCI_D3hot, 0);
4416 pci_enable_wake(pdev, PCI_D3cold, 0);
4419 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4420 * would have already happened in close and is redundant. */
4421 igb_release_hw_control(adapter);
4423 pci_disable_device(pdev);
4425 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4431 static int igb_resume(struct pci_dev *pdev)
4433 struct net_device *netdev = pci_get_drvdata(pdev);
4434 struct igb_adapter *adapter = netdev_priv(netdev);
4435 struct e1000_hw *hw = &adapter->hw;
4438 pci_set_power_state(pdev, PCI_D0);
4439 pci_restore_state(pdev);
4441 if (adapter->need_ioport)
4442 err = pci_enable_device(pdev);
4444 err = pci_enable_device_mem(pdev);
4447 "igb: Cannot enable PCI device from suspend\n");
4450 pci_set_master(pdev);
4452 pci_enable_wake(pdev, PCI_D3hot, 0);
4453 pci_enable_wake(pdev, PCI_D3cold, 0);
4455 igb_set_interrupt_capability(adapter);
4457 if (igb_alloc_queues(adapter)) {
4458 dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
4462 /* e1000_power_up_phy(adapter); */
4465 wr32(E1000_WUS, ~0);
4467 if (netif_running(netdev)) {
4468 err = igb_open(netdev);
4473 netif_device_attach(netdev);
4475 /* let the f/w know that the h/w is now under the control of the
4477 igb_get_hw_control(adapter);
4483 static void igb_shutdown(struct pci_dev *pdev)
4485 igb_suspend(pdev, PMSG_SUSPEND);
4488 #ifdef CONFIG_NET_POLL_CONTROLLER
4490 * Polling 'interrupt' - used by things like netconsole to send skbs
4491 * without having to re-enable interrupts. It's not called while
4492 * the interrupt routine is executing.
4494 static void igb_netpoll(struct net_device *netdev)
4496 struct igb_adapter *adapter = netdev_priv(netdev);
4500 igb_irq_disable(adapter);
4501 adapter->flags |= IGB_FLAG_IN_NETPOLL;
4503 for (i = 0; i < adapter->num_tx_queues; i++)
4504 igb_clean_tx_irq(&adapter->tx_ring[i]);
4506 for (i = 0; i < adapter->num_rx_queues; i++)
4507 igb_clean_rx_irq_adv(&adapter->rx_ring[i],
4509 adapter->rx_ring[i].napi.weight);
4511 adapter->flags &= ~IGB_FLAG_IN_NETPOLL;
4512 igb_irq_enable(adapter);
4514 #endif /* CONFIG_NET_POLL_CONTROLLER */
4517 * igb_io_error_detected - called when PCI error is detected
4518 * @pdev: Pointer to PCI device
4519 * @state: The current pci connection state
4521 * This function is called after a PCI bus error affecting
4522 * this device has been detected.
4524 static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev,
4525 pci_channel_state_t state)
4527 struct net_device *netdev = pci_get_drvdata(pdev);
4528 struct igb_adapter *adapter = netdev_priv(netdev);
4530 netif_device_detach(netdev);
4532 if (netif_running(netdev))
4534 pci_disable_device(pdev);
4536 /* Request a slot slot reset. */
4537 return PCI_ERS_RESULT_NEED_RESET;
4541 * igb_io_slot_reset - called after the pci bus has been reset.
4542 * @pdev: Pointer to PCI device
4544 * Restart the card from scratch, as if from a cold-boot. Implementation
4545 * resembles the first-half of the igb_resume routine.
4547 static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev)
4549 struct net_device *netdev = pci_get_drvdata(pdev);
4550 struct igb_adapter *adapter = netdev_priv(netdev);
4551 struct e1000_hw *hw = &adapter->hw;
4554 if (adapter->need_ioport)
4555 err = pci_enable_device(pdev);
4557 err = pci_enable_device_mem(pdev);
4560 "Cannot re-enable PCI device after reset.\n");
4561 return PCI_ERS_RESULT_DISCONNECT;
4563 pci_set_master(pdev);
4564 pci_restore_state(pdev);
4566 pci_enable_wake(pdev, PCI_D3hot, 0);
4567 pci_enable_wake(pdev, PCI_D3cold, 0);
4570 wr32(E1000_WUS, ~0);
4572 return PCI_ERS_RESULT_RECOVERED;
4576 * igb_io_resume - called when traffic can start flowing again.
4577 * @pdev: Pointer to PCI device
4579 * This callback is called when the error recovery driver tells us that
4580 * its OK to resume normal operation. Implementation resembles the
4581 * second-half of the igb_resume routine.
4583 static void igb_io_resume(struct pci_dev *pdev)
4585 struct net_device *netdev = pci_get_drvdata(pdev);
4586 struct igb_adapter *adapter = netdev_priv(netdev);
4588 igb_init_manageability(adapter);
4590 if (netif_running(netdev)) {
4591 if (igb_up(adapter)) {
4592 dev_err(&pdev->dev, "igb_up failed after reset\n");
4597 netif_device_attach(netdev);
4599 /* let the f/w know that the h/w is now under the control of the
4601 igb_get_hw_control(adapter);